{"product_id":"2-i-1-lcd-vattentemperaturmatare-voltmeter-12v-24v-digital-bilinstrument-med-10mm-temperaturgivare","title":"2-in-1 LCD Water Temperature Gauge \u0026 Voltmeter 12V\/24V – Digital Car Instrument with 10mm Temperature Sensor","description":"\u003cdiv lang=\"sv\" class=\"product-copy\"\u003e\n\u003c!-- Kortversion (200–300 ord) --\u003e\n\u003csection id=\"sammanfattning-kort\"\u003e\n\u003ch2\u003eQuick Overview\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003e2-in-1 LCD Water Temperature Gauge \u0026 Voltmeter (12V\/24V)\u003c\/strong\u003e is a compact digital instrument that combines two critical readings in one display: \u003cem\u003ecoolant temperature\u003c\/em\u003e and \u003cem\u003ebattery\/charging voltage\u003c\/em\u003e. The gauge comes with a dedicated \u003cstrong\u003e10 mm temperature sensor\u003c\/strong\u003e and is built for easy installation, stable operation, and high readability even in bright sunlight thanks to its built-in \u003cem\u003esunshade\u003c\/em\u003e and optimized brightness. It uses imported key components for better precision, long lifespan, and low power consumption. Typical applications include street cars, track days, drifting, off-road\/overland, RVs, commercial vehicles, trucks (24V), and classic vehicles where additional instrumentation is desired.\u003c\/p\u003e\n\u003cp\u003eThe temperature measurement range is \u003cstrong\u003e−10 °C to 139 °C\u003c\/strong\u003e (equivalent to −10 °F to 282 °F) with an accuracy of approximately \u003cstrong\u003e±1%\u003c\/strong\u003e. A built-in \u003cstrong\u003etemperature alarm function\u003c\/strong\u003e (adjustable approx. 95–120 °C) triggers a \u003cem\u003eflashing display\u003c\/em\u003e if the cooling system gets too hot, helping you detect problems early. The voltmeter provides a quick check of battery health and alternator charging (12V or 24V systems). The gauge is vibration-resistant, shock-proof, and designed for \u003cstrong\u003ehorizontal mounting\u003c\/strong\u003e with a clear, easy-to-read LCD.\u003c\/p\u003e\n\u003cp\u003eInstallation is straightforward: red wire to \u003cstrong\u003e+12\/24V\u003c\/strong\u003e, red\/black to \u003cstrong\u003eground\u003c\/strong\u003e, sensor mounted in the cooling circuit (10 mm seat\/adapter). The cable (approx. 60 cm) is often sufficient for dashboard mounting; for longer runs, extension with shielded cable may be appropriate. Important: \u003cstrong\u003edo not mix sensors\/instruments from other brands\u003c\/strong\u003e – this gauge must be used with the included sensor for accurate readings. With a complete manual, tips, and FAQ below, this is an \u003cem\u003eaffordable, reliable, and beginner-friendly\u003c\/em\u003e solution for monitoring temperature and voltage in real-time.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003c!-- H1 med huvudnyckelord --\u003e\n\u003ch2 id=\"top\"\u003e2-in-1 LCD Water Temperature Gauge \u0026 Voltmeter 12V\/24V – Digital Car Instrument with 10 mm Temperature Sensor\u003c\/h2\u003e\n\u003c!-- Innehållsförteckning \/ ankarlänkar --\u003e\u003cnav aria-label=\"Table of Contents\"\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"#introduktion\"\u003eIntroduction\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#specifikationer\"\u003eSpecifications\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#funktioner-anvandning\"\u003eFunctions \u0026 Applications\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#fordelar\"\u003eBenefits\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#kompatibilitet\"\u003eCompatibility \u0026 Installation Environment\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#manual\"\u003eInstallation \u0026 Manual\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#tips\"\u003eTips \u0026 Advice\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#faq\"\u003eFrequently Asked Questions (FAQ)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#forpackning\"\u003ePackage Contents\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#ansvar\"\u003eDisclaimer \u0026 Important Notes\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#sammanfattning-lang\"\u003eSummary\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/nav\u003e\u003c!-- Introduktion --\u003e\n\u003csection id=\"introduktion\"\u003e\n\u003ch2\u003eIntroduction\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003e2-in-1 digital car gauge\u003c\/strong\u003e combines a \u003cem\u003ewater temperature gauge\u003c\/em\u003e and a \u003cem\u003evoltmeter\u003c\/em\u003e in one sleek LCD instrument for 12V and 24V electrical systems. Thanks to an updated design with a \u003cstrong\u003esunshade\u003c\/strong\u003e, you can read clear digits even in direct sunlight, and optimized \u003cstrong\u003ebrightness\u003c\/strong\u003e provides comfortable viewing in the dark without glare. The construction is designed for \u003cem\u003estability, low energy consumption, and long lifespan\u003c\/em\u003e, with imported quality components ensuring precision and operational reliability.\u003c\/p\u003e\n\u003cp\u003eThe water temperature sensor (10 mm) is included and works specifically with this instrument to ensure accurate readings. The gauge also features an \u003cstrong\u003ealarm signal via flashing display\u003c\/strong\u003e when the temperature reaches a set alarm level (reference range 95–120 °C), allowing you to react in time if the cooling system overheats. The voltmeter shows the system voltage in real-time, which is practical for monitoring alternator charging, battery condition, and voltage drops under high load.\u003c\/p\u003e\n\u003cp\u003eWhether you commute daily, drive hard on the track, tow trailers on long inclines, or want to protect an older engine – this gauge provides \u003cem\u003eearly warnings\u003c\/em\u003e and valuable insight into the engine and electrical system. The horizontal form factor makes it easy to discreetly place on the dashboard, in a panel, or on a steering column cover, and its vibration-resistant mounting keeps the digits stable even on rough roads.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003c!-- Specifikationer --\u003e\n\u003csection id=\"specifikationer\"\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct:\u003c\/strong\u003e Water Temperature \u0026 Voltage – 2-in-1 LCD Gauge\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisplay:\u003c\/strong\u003e Digital LCD, horizontal mounting, sunshade for readability in sunlight\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e −10 °C to 139 °C (≈ −10 °F to 282 °F)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccuracy:\u003c\/strong\u003e approx. ±1%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Environment (instrument):\u003c\/strong\u003e 0–50 °C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Alarm:\u003c\/strong\u003e approx. 95–120 °C (flashing display upon alarm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrical System:\u003c\/strong\u003e 12V or 24V DC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Supply\/Cables:\u003c\/strong\u003e Red = +12\/24V; Red\/Black = Ground (−); cable length approx. 60 cm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSensor:\u003c\/strong\u003e Water temperature sensor 10 mm (must be used with \u003cem\u003ethis\u003c\/em\u003e instrument)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Consumption:\u003c\/strong\u003e Low (optimized for vehicles)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuild Quality:\u003c\/strong\u003e Imported key components for stability \u0026 longevity\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVibration Protection:\u003c\/strong\u003e Anti-vibration\/anti-shock design\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eElectrical Data (guidance)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupply Voltage:\u003c\/strong\u003e 9–32V DC (typical vehicle 12\/24V)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecommended Fuse:\u003c\/strong\u003e 1–3A fast-blow fuse on supply line\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrounding:\u003c\/strong\u003e Chassis ground \u0026lt; 0.1 Ω (short cable run, good contact)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eNote!\u003c\/em\u003e Specifications may vary slightly between batches. Always refer to the actual label\/manual included with the product.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003c!-- Funktioner \u0026 användning --\u003e\n\u003csection id=\"funktioner-anvandning\"\u003e\n\u003ch2\u003eFunctions \u0026 Applications\u003c\/h2\u003e\n\u003ch3\u003eCore Functions\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e2-in-1 display:\u003c\/strong\u003e Coolant temperature + system voltage in one instrument.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh readability:\u003c\/strong\u003e LCD with sunshade – clear even in direct sunlight.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEye-friendly brightness:\u003c\/strong\u003e Comfortable viewing in the dark without glare.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable temperature alarm:\u003c\/strong\u003e Flashing display upon overheating (≈ 95–120 °C).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStable \u0026 power-efficient:\u003c\/strong\u003e Low consumption, protected against vibrations \u0026 shocks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEasy installation:\u003c\/strong\u003e Two wires for operation, dedicated 10 mm sensor included.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh precision \u0026 longevity:\u003c\/strong\u003e Imported key components.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTypical Use Cases\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDaily commuting:\u003c\/strong\u003e Monitor operating temperature and charging, detect faults early.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrack \u0026 sport:\u003c\/strong\u003e Monitor temperature spikes during hard driving.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTowing \u0026 heavy loads:\u003c\/strong\u003e Ensure cooling capacity on long climbs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVintage\/classic cars:\u003c\/strong\u003e Supplement insufficient original instrumentation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRV\/commercial vehicles:\u003c\/strong\u003e Monitor both 12V and (if needed) 24V systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOff-road\/overlanding:\u003c\/strong\u003e Robust enough for uneven surfaces and vibrations.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eVoltage Assessment (guidance)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e12V system:\u003c\/strong\u003e 12.0–12.6V resting; ~13.8–14.7V charging (engine running).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e24V system:\u003c\/strong\u003e 24.0–25.2V resting; ~27.6–29.4V charging.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eTip:\u003c\/em\u003e Larger deviations may indicate a weak battery, poor ground, alternator failure, or high load.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003c!-- Fördelar --\u003e\n\u003csection id=\"fordelar\"\u003e\n\u003ch2\u003eBenefits – why this 2-in-1 gauge is a good choice\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo gauges in one:\u003c\/strong\u003e Saves space and wiring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClear display in all light:\u003c\/strong\u003e Sunshade + optimized brightness.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverheat alarm:\u003c\/strong\u003e Flashing warning saves engine in time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuick installation:\u003c\/strong\u003e Simple +\/− power and dedicated sensor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower-efficient and long-lasting:\u003c\/strong\u003e Built for daily vehicle use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRobust:\u003c\/strong\u003e Anti-vibration\/anti-shock for harsh environments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eDo you want to complement with more instruments? Feel free to explore our internal categories such as \u003ca rel=\"noopener\" href=\"https:\/\/www.felkodslasare.se\/collections\/temperaturmatare\"\u003etemperature gauges\u003c\/a\u003e and \u003ca rel=\"noopener\" href=\"https:\/\/www.felkodslasare.se\/collections\/voltmatare\"\u003evoltmeters\u003c\/a\u003e for matching products.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003c!-- Kompatibilitet --\u003e\n\u003csection id=\"kompatibilitet\"\u003e\n\u003ch2\u003eCompatibility \u0026 Installation Environment\u003c\/h2\u003e\n\u003cp\u003eDesigned for vehicles with \u003cstrong\u003e12V or 24V\u003c\/strong\u003e electrical systems (passenger cars, light commercial vehicles, certain trucks\/RVs). Temperature is measured via the included \u003cstrong\u003e10 mm\u003c\/strong\u003e water temperature sensor – the instrument and sensor are \u003cem\u003ematched\u003c\/em\u003e and should \u003cstrong\u003enot\u003c\/strong\u003e be mixed with sensors\/instruments from other manufacturers.\u003c\/p\u003e\n\u003cp\u003eTo install the sensor, a \u003cstrong\u003e10 mm seat\u003c\/strong\u003e in the cooling system is required (e.g., in the thermostat housing, manifold, adapter in the upper radiator hose, or sensor fitting in a cooling pipe). If no 10 mm seat is available, a \u003cem\u003ehose adapter\/T-fitting\u003c\/em\u003e with a 10 mm port can be used, or a workshop can weld in a sensor plug (always follow good professional practice).\u003c\/p\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse;\" aria-label=\"Environment \u0026 Examples\" role=\"table\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; border-bottom: 1px solid #e5e7eb; padding: .5rem;\"\u003eEnvironment\u003c\/th\u003e\n\u003cth style=\"text-align: left; border-bottom: 1px solid #e5e7eb; padding: .5rem;\"\u003eExample\u003c\/th\u003e\n\u003cth style=\"text-align: left; border-bottom: 1px solid #e5e7eb; padding: .5rem;\"\u003eNote\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: .5rem;\"\u003e12V\u003c\/td\u003e\n\u003ctd style=\"padding: .5rem;\"\u003ePassenger car, pickup, off-road\u003c\/td\u003e\n\u003ctd style=\"padding: .5rem;\"\u003eDirect feed via ACC or fused +12V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: .5rem;\"\u003e24V\u003c\/td\u003e\n\u003ctd style=\"padding: .5rem;\"\u003eTruck, RV\u003c\/td\u003e\n\u003ctd style=\"padding: .5rem;\"\u003eDirect feed via fused +24V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: .5rem;\"\u003eSensor placement\u003c\/td\u003e\n\u003ctd style=\"padding: .5rem;\"\u003eThermostat housing \/ upper radiator hose\u003c\/td\u003e\n\u003ctd style=\"padding: .5rem;\"\u003eEnsure tightness and bleeding\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cem\u003eNote!\u003c\/em\u003e Avoid aggressive chemicals\/vapors on the display and electronics. Do not place the gauge where it will be exposed to direct water splashes into the casing.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003c!-- Installation \u0026 manual (fullständig guide) --\u003e\n\u003csection id=\"manual\"\u003e\n\u003ch2\u003eInstallation \u0026 Manual 🔧\u003c\/h2\u003e\n\u003ch3\u003eImportant before you start\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWork on a \u003cstrong\u003eturned off engine\u003c\/strong\u003e and cold cooling system (risk of burns from hot coolant!).\u003c\/li\u003e\n\u003cli\u003eDisconnect the battery's negative terminal when wiring.\u003c\/li\u003e\n\u003cli\u003ePlan wiring so that cables are protected from heat, moving parts, and sharp edges.\u003c\/li\u003e\n\u003cli\u003ePrepare a hose adapter\/port with a \u003cstrong\u003e10 mm\u003c\/strong\u003e sensor connection if not available from the factory.\u003c\/li\u003e\n\u003cli\u003eHave fresh coolant, hose clamps, and thread sealant (PTFE tape or glycol-resistant thread paste) ready.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTools \u0026 materials\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eScrewdrivers, sockets, wrenches\u003c\/li\u003e\n\u003cli\u003ePliers for clamps, wire cutters, wire strippers\u003c\/li\u003e\n\u003cli\u003eElectrical tape\/heat shrink, terminals (ring terminal for ground), zip ties\u003c\/li\u003e\n\u003cli\u003ePTFE tape\/thread paste (for sensor thread depending on seat)\u003c\/li\u003e\n\u003cli\u003eHose adapter\/T-fitting with 10 mm port (if needed)\u003c\/li\u003e\n\u003cli\u003e1–3A \u003cstrong\u003ein-line fuse holder\u003c\/strong\u003e for the +12\/24V power supply\u003c\/li\u003e\n\u003cli\u003eMultimeter for checking voltage\/ground\u003c\/li\u003e\n\u003cli\u003eCatch pan for coolant and filling equipment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eElectrical connection (basic)\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eIdentify a suitable \u003cstrong\u003eignition-switched\u003c\/strong\u003e positive (ACC) or fused constant positive depending on how you want the gauge to be active.\u003c\/li\u003e\n\u003cli\u003eInstall a \u003cstrong\u003e1–3A fuse\u003c\/strong\u003e near the power source on the red wire.\u003c\/li\u003e\n\u003cli\u003eConnect the \u003cstrong\u003eRed\u003c\/strong\u003e wire to +12\/24V after the fuse.\u003c\/li\u003e\n\u003cli\u003eConnect the \u003cstrong\u003eRed\/Black\u003c\/strong\u003e wire to a good \u003cstrong\u003echassis ground\u003c\/strong\u003e (scrape clean to bare metal, use a ring terminal).\u003c\/li\u003e\n\u003cli\u003eVerify with a multimeter: ~12–14.7V (or 24–29.4V) between red and ground when ignition is on.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eMounting the temperature sensor\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eLocate a \u003cstrong\u003esuitable place\u003c\/strong\u003e for the sensor: thermostat housing, engine block port, or a \u003cem\u003eT-fitting\u003c\/em\u003e in the upper radiator hose. The seat should be \u003cstrong\u003e10 mm\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eDrain enough coolant to install the sensor without spills.\u003c\/li\u003e\n\u003cli\u003eUse thread sealant according to the manufacturer's recommendations and screw in the sensor \u003cstrong\u003ewithout overtightening\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eReassemble hoses\/clamps and tighten properly. Ensure the sensor cable has \u003cstrong\u003estrain relief\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eRoute the sensor cable along existing wiring harnesses towards the cabin. Secure with zip ties, keep distance from the exhaust system.\u003c\/li\u003e\n\u003cli\u003eConnect the sensor connector to the instrument according to marking.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eMounting the instrument\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eChoose a location on a \u003cstrong\u003ehorizontal surface\u003c\/strong\u003e with good visibility, e.g., dashboard.\u003c\/li\u003e\n\u003cli\u003eDegrease the surface and attach the instrument with the included holder\/tape\/screw (depending on the design).\u003c\/li\u003e\n\u003cli\u003eArrange wiring so that cables are not pinched or unnecessarily visible.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eRefilling \u0026 bleeding the cooling system\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eRefill coolant according to the vehicle manufacturer's specifications.\u003c\/li\u003e\n\u003cli\u003eStart the engine and let it idle with the heater on maximum (if applicable) to circulate coolant.\u003c\/li\u003e\n\u003cli\u003eMonitor for leaks at the sensor\/connections. Top up the level and bleed according to the car's procedures.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eFirst startup \u0026 function check\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eTurn on ignition. The display should light up and show \u003cem\u003evoltage\u003c\/em\u003e and \u003cem\u003etemperature\u003c\/em\u003e (cold engine ≈ ambient).\u003c\/li\u003e\n\u003cli\u003eAfter a test drive, the temperature should rise to normal operating temperature (usually 80–105 °C depending on the car).\u003c\/li\u003e\n\u003cli\u003eCheck that the \u003cstrong\u003ealarm\u003c\/strong\u003e triggers (display flashes) if the alarm threshold is exceeded.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eAlarm adjustment (if applicable)\u003c\/h3\u003e\n\u003cp\u003eSome batches have a fixed alarm level within 95–120 °C. If your model supports adjustment: follow the menu instructions in the included manual to select the desired alarm level.\u003c\/p\u003e\n\u003ch3\u003eTroubleshooting\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo display:\u003c\/strong\u003e Check fuse, +\/− connections, ground point, ignition position.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncorrect voltage:\u003c\/strong\u003e Measure directly on the battery. Large difference indicates poor ground or voltage drop – fix wiring\/contacts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature shows unreasonable values:\u003c\/strong\u003e Air in the system, poor contact, incorrect placement, or leaky sensor. Bleed the system, secure sensor mounting and cable.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLeakage at sensor:\u003c\/strong\u003e Replace sealing material, check thread fit, do not overtighten.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterference\/flickering:\u003c\/strong\u003e Separate signal cables from ignition cables\/high current lines, use shielded cable for extension.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eMaintenance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCheck terminals, ground point, and sensor mounting during service.\u003c\/li\u003e\n\u003cli\u003eClean display\/sunshade with a soft cloth – avoid solvents.\u003c\/li\u003e\n\u003cli\u003eVerify alarm function at the start of the season (monitor temperature during warm-up).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003c!-- Tips \u0026 råd --\u003e\n\u003csection id=\"tips\"\u003e\n\u003ch2\u003eTips \u0026 Advice 💡\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlacement:\u003c\/strong\u003e The upper radiator hose provides a quick response to the actual engine temperature going to the radiator.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSealing:\u003c\/strong\u003e Use PTFE tape or approved thread paste according to the seat material (aluminum\/steel).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGround:\u003c\/strong\u003e A strong ground minimizes noise and incorrect readings – short, thick cable to clean chassis ground.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuse:\u003c\/strong\u003e Always protect the power supply with a 1–3A fuse near the source.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCable routing:\u003c\/strong\u003e Keep distance from the exhaust system; use cable protection where heat\/sharp edges exist.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlarm level:\u003c\/strong\u003e Set a realistic limit based on your engine (usually 100–110 °C for modern gasoline; follow OEM data).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage diagnosis:\u003c\/strong\u003e If voltage dips during driving – check alternator belt, ground straps, and battery age.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003c!-- FAQ --\u003e\n\u003csection id=\"faq\"\u003e\n\u003ch2\u003eFrequently Asked Questions (FAQ)\u003c\/h2\u003e\n\u003ch3\u003eDoes the gauge fit both 12V and 24V?\u003c\/h3\u003e\n\u003cp\u003eYes, the gauge is designed for vehicles with 12V or 24V electrical systems.\u003c\/p\u003e\n\u003ch3\u003eWhich sensor is included?\u003c\/h3\u003e\n\u003cp\u003eA dedicated \u003cstrong\u003e10 mm water temperature sensor\u003c\/strong\u003e that is matched to the instrument.\u003c\/p\u003e\n\u003ch3\u003eCan I use another 10 mm sensor I have at home?\u003c\/h3\u003e\n\u003cp\u003eNo. The instrument and sensor in this package must be used \u003cem\u003etogether\u003c\/em\u003e. Mixing with other brands can lead to incorrect readings or damage.\u003c\/p\u003e\n\u003ch3\u003eWhere should the sensor be mounted?\u003c\/h3\u003e\n\u003cp\u003eIn a 10 mm seat in the cooling circuit, e.g., thermostat housing or via a T-adapter in the upper radiator hose.\u003c\/p\u003e\n\u003ch3\u003eWhat happens if it overheats?\u003c\/h3\u003e\n\u003cp\u003eThe display \u003cstrong\u003eflashes\u003c\/strong\u003e as an alarm when the set threshold is reached (≈95–120 °C).\u003c\/p\u003e\n\u003ch3\u003eCan I set the alarm level?\u003c\/h3\u003e\n\u003cp\u003eSome versions have a fixed level, others are adjustable within the range. Follow the included manual for your batch.\u003c\/p\u003e\n\u003ch3\u003eHow long is the cable?\u003c\/h3\u003e\n\u003cp\u003eApprox. \u003cstrong\u003e60 cm\u003c\/strong\u003e from the instrument. If needed, you can extend it with correctly sized\/shielded cable.\u003c\/p\u003e\n\u003ch3\u003eDoes the gauge display Fahrenheit?\u003c\/h3\u003e\n\u003cp\u003eThe measurement range is also specified in °F (−10 °F to 282 °F), but the display is usually in °C. Refer to the batch manual for the display mode.\u003c\/p\u003e\n\u003ch3\u003eIs the gauge vibration resistant?\u003c\/h3\u003e\n\u003cp\u003eYes, the design is anti-vibration\/anti-shock for vehicles.\u003c\/p\u003e\n\u003ch3\u003eIs it waterproof?\u003c\/h3\u003e\n\u003cp\u003eIt is intended for mounting in the cabin\/panel. Avoid direct water splashes onto electronics and connectors.\u003c\/p\u003e\n\u003ch3\u003eCan I use it in a boat?\u003c\/h3\u003e\n\u003cp\u003eOnly in a dry area and with correct 12\/24V DC. Observe marine environmental requirements and corrosion protection.\u003c\/p\u003e\n\u003ch3\u003eDoes the voltmeter show charging problems?\u003c\/h3\u003e\n\u003cp\u003eYes, it displays system voltage in real-time – useful for seeing charging status and voltage drops.\u003c\/p\u003e\n\u003ch3\u003eDo I need a special fuse?\u003c\/h3\u003e\n\u003cp\u003eYes, a 1–3A in-line fuse between the power source and the instrument's red wire is recommended.\u003c\/p\u003e\n\u003ch3\u003eCan I install it myself?\u003c\/h3\u003e\n\u003cp\u003eYes, with basic tool proficiency. If in doubt – consult a professional workshop, especially for interventions in the cooling system.\u003c\/p\u003e\n\u003ch3\u003eDoes it show oil temperature?\u003c\/h3\u003e\n\u003cp\u003eNo, the sensor is for \u003cstrong\u003ewater temperature\u003c\/strong\u003e. For oil, a separate gauge\/sensor is required.\u003c\/p\u003e\n\u003ch3\u003eIs the display dimmable?\u003c\/h3\u003e\n\u003cp\u003eThe brightness is optimized for clarity without glare. Dimming functionality may vary per batch.\u003c\/p\u003e\n\u003ch3\u003eHow is the gauge calibrated?\u003c\/h3\u003e\n\u003cp\u003eThe gauge is factory-calibrated for its sensor. Use only the included sensor.\u003c\/p\u003e\n\u003ch3\u003eWhat do I do if the reading fluctuates?\u003c\/h3\u003e\n\u003cp\u003eCheck the ground point, cable splices, and separate the signal cable from ignition cables\/high current.\u003c\/p\u003e\n\u003ch3\u003eWhat is normal operating temperature?\u003c\/h3\u003e\n\u003cp\u003eUsually 80–105 °C depending on the engine. Follow the vehicle's OEM specification.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003c!-- Förpackningsinnehåll --\u003e\n\u003csection id=\"forpackning\"\u003e\n\u003ch2\u003ePackage Contents 📦\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1 × 2-in-1 LCD water temperature gauge \u0026 voltmeter (12\/24V)\u003c\/li\u003e\n\u003cli\u003e1 × 10 mm water temperature sensor (matched to the instrument)\u003c\/li\u003e\n\u003cli\u003e1 × Cable set (red +, red\/black −)\u003c\/li\u003e\n\u003cli\u003e1 × Quick manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eNote!\u003c\/em\u003e Minor variations may occur. See the content list for your specific batch.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003c!-- Ansvarsfriskrivning --\u003e\n\u003csection id=\"ansvar\"\u003e\n\u003ch2\u003eDisclaimer \u0026 Important Notes ⚠️\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDo not mix\u003c\/strong\u003e this instrument with sensors from other manufacturers or vice versa. This can cause incorrect readings or damage.\u003c\/li\u003e\n\u003cli\u003eWork on the cooling system should be done on a \u003cstrong\u003ecold engine\u003c\/strong\u003e. Always follow the vehicle's service instructions.\u003c\/li\u003e\n\u003cli\u003eElectrical interventions must be secured with an appropriate \u003cstrong\u003ein-line fuse\u003c\/strong\u003e and proper grounding.\u003c\/li\u003e\n\u003cli\u003eSpecifications are subject to change without prior notice. Images\/designs may vary.\u003c\/li\u003e\n\u003cli\u003eInstallation is at your own risk. If in doubt – consult a qualified workshop.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003c!-- Long summary\/conclusion --\u003e\n\u003csection id=\"sammanfattning-lang\"\u003e\n\u003ch2\u003eSummary\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003e2-in-1 LCD Water Temperature \u0026amp; Voltmeter\u003c\/strong\u003e provides you with critical real-time information on both \u003cem\u003ecoolant temperature\u003c\/em\u003e and \u003cem\u003ebattery\/charging voltage\u003c\/em\u003e in a single, easy-to-read instrument. With a sun-protected LCD, low power consumption, robust construction, and a flashing alarm for high temperature, it's a smart choice for everything from daily commuting to track days, heavy-duty work, and long journeys. The dedicated \u003cstrong\u003e10 mm sensor\u003c\/strong\u003e ensures accurate measurement – provided it is used in conjunction with \u003cem\u003ethis specific\u003c\/em\u003e gauge, according to the manufacturer's explicit instructions. Installation is straightforward, and the guide above provides clear steps for electrical setup, sensor mounting, and commissioning.\u003c\/p\u003e\n\u003cp\u003eWant to expand your instrumentation further? Check out our internal selection of \u003ca rel=\"noopener\" href=\"https:\/\/www.felkodslasare.se\/collections\/temperaturmatare\"\u003etemperature gauges\u003c\/a\u003e and \u003ca rel=\"noopener\" href=\"https:\/\/www.felkodslasare.se\/collections\/voltmatare\"\u003evoltmeters\u003c\/a\u003e to create a unified panel with the same style and function.\u003c\/p\u003e\n\u003cp\u003e\u003ca aria-label=\"Back to top\" href=\"#top\"\u003eBack to top ↑\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/section\u003e\n\u003cp\u003e\u003csmall\u003eLast updated: November 11, 2025\u003c\/small\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"JFIND","offers":[{"title":"Default Title","offer_id":54552166531340,"sku":"FEL-D0195","price":13.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0746\/4979\/6876\/files\/H02c39e34c6ee4db28c43aa0c7c982fa7C.png?v=1766930442","url":"https:\/\/www.felkodslasare.se\/en-en\/products\/2-i-1-lcd-vattentemperaturmatare-voltmeter-12v-24v-digital-bilinstrument-med-10mm-temperaturgivare","provider":"Felkodsläsare","version":"1.0","type":"link"}