{"product_id":"jfind-jf100-power-probe-kretsprovare-med-digital-display","title":"JFIND JF100 Power Probe \/ Circuit Tester with Digital Display","description":"\u003cdiv class=\"product-page\"\u003e\n\u003ch2\u003eJFIND JF100 Power Probe \/ Circuit Tester with Digital Display (DC 6–30V) – Polarity, Continuity, Ground Test, Activation \u0026amp; Short Circuit Tracing\u003c\/h2\u003e\n\u003c!-- KORTVERSION 200–300 ORD --\u003e\n\u003csection id=\"kortversion\"\u003e\n\u003cp\u003eThe JFIND JF100 is a \u003cstrong\u003eprofessional circuit tester (power probe)\u003c\/strong\u003e for those who want to troubleshoot car electrical systems faster, safer, and with better control than with a conventional test light. It operates within \u003cstrong\u003eDC 6–30V\u003c\/strong\u003e, making it suitable for both \u003cstrong\u003e12V\u003c\/strong\u003e and \u003cstrong\u003e24V\u003c\/strong\u003e systems (and other DC applications within the range). With a clear \u003cstrong\u003edigital display\u003c\/strong\u003e, you can see voltage and status directly, and you get multiple functions in one tool: \u003cstrong\u003epolarity check\u003c\/strong\u003e, \u003cstrong\u003econtinuity test\u003c\/strong\u003e, \u003cstrong\u003eground test\u003c\/strong\u003e, the ability to \u003cstrong\u003etrace and locate short circuits\u003c\/strong\u003e, and to \u003cstrong\u003eactivate and test components\u003c\/strong\u003e by supplying power (according to the tool's functions).\u003c\/p\u003e\n\u003cp\u003eThe JF100 also features an \u003cstrong\u003eLED indicator\u003c\/strong\u003e and \u003cstrong\u003ebuzzer\u003c\/strong\u003e for quick feedback, \u003cstrong\u003eoverload protection\u003c\/strong\u003e for safer work, and a \u003cstrong\u003ejumper function\u003c\/strong\u003e when you need to bridge\/power a circuit for testing. It is \"universal\" for vehicles and is a perfect complement in the workshop, garage, or service vehicle – whether you are troubleshooting lighting, relays, fuses, sensors, fans, pumps, or broken wires.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e JFIND JF100 (JF100)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e DC 6–30V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisplay:\u003c\/strong\u003e Digital\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunctions:\u003c\/strong\u003e Polarity, continuity, ground test, short circuit tracing, component activation, LED + buzzer, overload protection, jumper\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1 year\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e✅ For those who want to troubleshoot faster and avoid guessing – the JF100 helps you find faults and verify circuits in a more \"mechanic-friendly\" way.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003chr\u003e\n\u003csection id=\"innehall\"\u003e\n\u003ch2\u003eContents\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"#vad-ar\"\u003eWhat is a power probe \/ circuit tester?\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#funktioner\"\u003eTop 8 functions – what they do in practice\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#specifikationer\"\u003eSpecifications\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#anvandning\"\u003eStep-by-step guide: how to use the JFIND JF100\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#arbetsfloden\"\u003eCommon troubleshooting scenarios\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#felsokning\"\u003eTroubleshooting if you don't get results\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#faq\"\u003eFAQ\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#notiser\"\u003eNotices \u0026amp; Disclaimer\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003chr\u003e\n\u003csection id=\"vad-ar\"\u003e\n\u003ch2\u003eWhat is a power probe \/ circuit tester?\u003c\/h2\u003e\n\u003cp\u003eA power probe (circuit tester) is a tool that combines a test light, multimeter functions, and practical workshop functions in one instrument. Instead of just showing \"there's power,\" you can quickly:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003esee \u003cstrong\u003epolarity information\u003c\/strong\u003e and voltage\u003c\/li\u003e\n\u003cli\u003echeck \u003cstrong\u003eground\u003c\/strong\u003e and \u003cstrong\u003econtinuity\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003efind and confirm \u003cstrong\u003ewire breaks\u003c\/strong\u003e or \u003cstrong\u003eshort circuits\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eactivate components\u003c\/strong\u003e (e.g., relays, fans, solenoids) to verify if the fault is mechanical or electrical\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe JFIND JF100 is designed to make troubleshooting faster and more efficient – especially when working with electrical systems in cars, light trucks, motorhomes, machinery, or other DC systems within 6–30V.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003chr\u003e\n\u003csection id=\"funktioner\"\u003e\n\u003ch2\u003eTop 8 functions – what they do in practice\u003c\/h2\u003e\n\u003ch3\u003e1) Polarity Test\u003c\/h3\u003e\n\u003cp\u003eShows whether you are measuring \u003cstrong\u003epositive\u003c\/strong\u003e or \u003cstrong\u003enegative\/ground\u003c\/strong\u003e at a point. Practical for troubleshooting connectors, loose connections, lamps, aftermarket equipment, and uncertain wire colors.\u003c\/p\u003e\n\u003ch3\u003e2) Continuity Test\u003c\/h3\u003e\n\u003cp\u003eHelps you find \u003cstrong\u003ebreaks\u003c\/strong\u003e in wires, fuses, or connections. Perfect when something \"looks intact\" but doesn't work.\u003c\/p\u003e\n\u003ch3\u003e3) Grounding Test\u003c\/h3\u003e\n\u003cp\u003ePoor grounding is one of the most common causes of strange electrical faults. With a ground test, you can quickly verify if the ground point is okay.\u003c\/p\u003e\n\u003ch3\u003e4) Track \u0026amp; Locate Short Circuits\u003c\/h3\u003e\n\u003cp\u003eFacilitates when a fuse blows immediately or intermittent faults occur. This function is designed to help you find where the fault lies in the circuit.\u003c\/p\u003e\n\u003ch3\u003e5) Component Activation \u0026amp; Testing\u003c\/h3\u003e\n\u003cp\u003eTest if a component works by activating it (e.g., relay, solenoid, fan motor) – useful for distinguishing between \"fault in control\/wiring\" and \"defective component.\"\u003c\/p\u003e\n\u003ch3\u003e6) LED Indicator \u0026amp; Buzzer Alarm\u003c\/h3\u003e\n\u003cp\u003eQuick feedback in a workshop environment: you both \u003cstrong\u003esee\u003c\/strong\u003e and \u003cstrong\u003ehear\u003c\/strong\u003e the status without constantly staring at the screen.\u003c\/p\u003e\n\u003ch3\u003e7) Overload Protection\u003c\/h3\u003e\n\u003cp\u003eExtra safety when working with unknown circuits. The protection is designed to reduce risk in case of incorrect load or short circuit.\u003c\/p\u003e\n\u003ch3\u003e8) Jumper Operation\u003c\/h3\u003e\n\u003cp\u003eWhen you need to power or bridge a circuit for testing, the jumper mode is a practical way to work more controlled.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003chr\u003e\n\u003csection id=\"specifikationer\"\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eItem name\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eJFIND JF100 Automotive Circuit Tester\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eProduct Model\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eJF100\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eProduct Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eCar circuit tester \/ power probe\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eVoltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eDC 6–30V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eFor Vehicle Brand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eUniversal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eMain Functions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e1) Polarity Test\u003cbr\u003e2) Continuity Test\u003cbr\u003e3) Grounding Test\u003cbr\u003e4) Track \u0026amp; Locate Short Circuits\u003cbr\u003e5) Component Activation \u0026amp; Testing\u003cbr\u003e6) LED Indicator \u0026amp; Buzzer Alarm\u003cbr\u003e7) Overload Protection\u003cbr\u003e8) Jumper Operation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eDisplay Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eDigital\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e1 Year\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/section\u003e\n\u003chr\u003e\n\u003csection id=\"anvandning\"\u003e\n\u003ch2\u003eStep-by-step guide: how to use the JFIND JF100 safely\u003c\/h2\u003e\n\u003ch3\u003ePreparation\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWork in a safe environment, avoid loose clothing near moving parts.\u003c\/li\u003e\n\u003cli\u003eIdentify a good ground point on the chassis or the battery's negative terminal.\u003c\/li\u003e\n\u003cli\u003eIf you are unsure about the circuit: always start with \"measure\" before \"powering\/activating.\"\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e1) Connect ground (basic step)\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eConnect the tool's ground clamp to a stable ground point or the battery's negative.\u003c\/li\u003e\n\u003cli\u003eEnsure the connection is secure (poor ground gives misleading results).\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003e2) Polarity and voltage test\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eTouch the test probe to the point you want to test (e.g., fuse holder, connector, wire end).\u003c\/li\u003e\n\u003cli\u003eRead the digital display for voltage and polarity\/indication.\u003c\/li\u003e\n\u003cli\u003eCompare with the expected value (e.g., approximately 12–14V when the car is running, approximately 24–28V in 24V systems when the alternator is charging).\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003e3) Continuity test (for wire breaks and fuses)\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eTurn off the relevant circuit if necessary and follow the recommended method for continuity.\u003c\/li\u003e\n\u003cli\u003eTest between two points (e.g., connector A to connector B) to see if there is a break.\u003c\/li\u003e\n\u003cli\u003eUse sound\/indication for quick checks when wiggling the wiring.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003e4) Ground test (common fault area)\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eTest ground points by measuring against a known positive or via the tool's ground function.\u003c\/li\u003e\n\u003cli\u003eIf the ground point is poor: clean, tighten, and protect against corrosion.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003e5) Activate and test components\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eIdentify the component and its pins (e.g., relay control, motor, solenoid).\u003c\/li\u003e\n\u003cli\u003eUse the activation function to power\/activate and see if the component reacts.\u003c\/li\u003e\n\u003cli\u003eIf the component works when activated but not in operation: the fault is often in the control, relay, fuse, or wiring.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e Activation\/powering should be done with caution. Powering the wrong circuit can cause damage. Always use the correct wiring diagram and start with low-risk tests.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003chr\u003e\n\u003csection id=\"arbetsfloden\"\u003e\n\u003ch2\u003eCommon troubleshooting scenarios\u003c\/h2\u003e\n\u003ch3\u003eScenario A: A lamp\/consumer is not working\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eTest the fuse: is there voltage in\/out?\u003c\/li\u003e\n\u003cli\u003eTest the connector at the consumer: is there positive voltage?\u003c\/li\u003e\n\u003cli\u003eTest the ground: is the ground point okay?\u003c\/li\u003e\n\u003cli\u003eIf positive voltage and ground are present: activate\/test the component to confirm if it is faulty.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eScenario B: Fuse blows immediately\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eConfirm which circuit is blowing the fuse.\u003c\/li\u003e\n\u003cli\u003eUse short circuit tracing to find where the fault lies.\u003c\/li\u003e\n\u003cli\u003eCheck wiring for chafing against the body, moisture in the connector, or incorrect aftermarket installation.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eScenario C: Intermittent fault (works sometimes)\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eTest continuity and \"wiggle test\" (move wiring and connectors).\u003c\/li\u003e\n\u003cli\u003eListen for the buzzer\/indication to change due to a loose connection.\u003c\/li\u003e\n\u003cli\u003eCheck ground points and fuse holders.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/section\u003e\n\u003chr\u003e\n\u003csection id=\"felsokning\"\u003e\n\u003ch2\u003eTroubleshooting if you don't get results\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo indication:\u003c\/strong\u003e ensure the ground clamp is connected to a good ground.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStrange readings:\u003c\/strong\u003e the test point may be \"floating\" or controlled by a module – compare with the wiring diagram.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComponent does not activate:\u003c\/strong\u003e check that you are on the correct pin\/circuit and that the component does not require a control signal\/relay.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuzzer\/LED confusing:\u003c\/strong\u003e work methodically: measure first, then activate.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003chr\u003e\n\u003csection id=\"faq\"\u003e\n\u003ch2\u003eFAQ – Frequently Asked Questions about JFIND JF100\u003c\/h2\u003e\n\u003ch3\u003e1) Which vehicles does it work on?\u003c\/h3\u003e\n\u003cp\u003eIt is stated as \u003cstrong\u003euniversal\u003c\/strong\u003e and operates on \u003cstrong\u003eDC 6–30V\u003c\/strong\u003e, covering many 12V and 24V vehicles.\u003c\/p\u003e\n\u003ch3\u003e2) Is this a multimeter?\u003c\/h3\u003e\n\u003cp\u003eIt doesn't always replace a full multimeter, but it is a very practical tool for quick troubleshooting, polarity, ground, and circuit checks.\u003c\/p\u003e\n\u003ch3\u003e3) Can I activate components with it?\u003c\/h3\u003e\n\u003cp\u003eYes, one of the main functions is \u003cstrong\u003eComponent Activation \u0026amp; Testing\u003c\/strong\u003e. Use the correct wiring diagram and be cautious with power supply.\u003c\/p\u003e\n\u003ch3\u003e4) Does it have protection if I make a mistake?\u003c\/h3\u003e\n\u003cp\u003eIt has \u003cstrong\u003eOverload Protection\u003c\/strong\u003e according to the specification, which is designed to increase safety during work.\u003c\/p\u003e\n\u003ch3\u003e5) What is the voltage range?\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDC 6–30V\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003e6) How do I know if a point is positive or negative?\u003c\/h3\u003e\n\u003cp\u003eUse \u003cstrong\u003ePolarity Test\u003c\/strong\u003e – the tool is designed to show polarity and provide clear feedback.\u003c\/p\u003e\n\u003ch3\u003e7) Can it help me find a short circuit?\u003c\/h3\u003e\n\u003cp\u003eYes, it has a function to \u003cstrong\u003etrack and locate short circuits\u003c\/strong\u003e according to the list of main functions.\u003c\/p\u003e\n\u003ch3\u003e8) Is the display digital?\u003c\/h3\u003e\n\u003cp\u003eYes, \u003cstrong\u003eDisplay Type: Digital\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003e9) Do I get an audio signal?\u003c\/h3\u003e\n\u003cp\u003eYes, \u003cstrong\u003eLED Indicator \u0026amp; Buzzer Alarm\u003c\/strong\u003e is available according to the specification.\u003c\/p\u003e\n\u003ch3\u003e10) How long is the warranty?\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003e1 year\u003c\/strong\u003e according to the specification.\u003c\/p\u003e\n\u003ch3\u003e11) Is it only for cars?\u003c\/h3\u003e\n\u003cp\u003eIt is described as a \"car circuit tester,\" but it essentially works in other DC systems within 6–30V where you need to troubleshoot circuits.\u003c\/p\u003e\n\u003ch3\u003e12) Can I use it on sensitive control systems?\u003c\/h3\u003e\n\u003cp\u003eMany modern vehicles have controlled circuits and modules. Work carefully, follow the wiring diagram, and avoid powering the wrong circuit. If unsure: use the measurement mode first.\u003c\/p\u003e\n\u003ch3\u003e13) Do I need to disconnect the battery for a continuity test?\u003c\/h3\u003e\n\u003cp\u003eDepending on the method, it may be recommended to perform continuity tests with no power. Follow the tool's and vehicle's recommendations.\u003c\/p\u003e\n\u003ch3\u003e14) Can I \"jumper\" with it?\u003c\/h3\u003e\n\u003cp\u003eYes, \u003cstrong\u003eJumper Operation\u003c\/strong\u003e is available according to the specification.\u003c\/p\u003e\n\u003ch3\u003e15) What is the model name?\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eJF100\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003chr\u003e\n\u003csection id=\"notiser\"\u003e\n\u003ch2\u003eNotices \u0026amp; Disclaimer\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eTroubleshooting and activation of components should be done with caution. Incorrect power supply can cause damage to control units, wiring, or components.\u003c\/li\u003e\n\u003cli\u003eAlways use the correct wiring diagram and work methodically: measure first, then activate.\u003c\/li\u003e\n\u003cli\u003eThe voltage range is \u003cstrong\u003eDC 6–30V\u003c\/strong\u003e. Do not use outside the specified range.\u003c\/li\u003e\n\u003cli\u003eOverload protection increases safety but does not replace correct working methods and knowledge.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e","brand":"Jfind","offers":[{"title":"Default Title","offer_id":54621797024012,"sku":"FEL-J0010","price":18.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0746\/4979\/6876\/files\/H9d37820d1f504ae7b40dd46f92b26503n.jpg?v=1767468486","url":"https:\/\/www.felkodslasare.se\/en-en\/products\/jfind-jf100-power-probe-kretsprovare-med-digital-display","provider":"Felkodsläsare","version":"1.0","type":"link"}