REVIEWS
Daqian World Commodity Store Relay Tester of 2026
By Daqian World Commodity Store Editor • 2026-09-20
Disclosure: As an Amazon Associate, we earn from qualifying purchases made through links on this page. Our assessments are based on hands-on testing. Buying through our links does not affect your price but supports our research.
Daqian World Commodity Store Relay Tester
of September 2026
1
Best Choiceallsun
allsun em415Pro Automotive Electrical Open&Short Finder Circuit Tester Tone Generator Cable Wire Breaker Tracker Fault Finder DC Less than 42V Probe Car Diagnostic Tools, Measuring12V battery circuit
9.9
Exceptional
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2
Best ValueKAIWEETS
KAIWEETS HT206D Digital Clamp Meter T-RMS 6000 Counts, Multimeter Voltage Tester Auto-ranging, Measures Current Voltage Temperature Capacitance Resistance Diodes Continuity Duty-Cycle (AC/DC Current)
9.8
Exceptional
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3
Lisle
Lisle 20610 Inline Spark Tester, One Size, Factory
9.7
Exceptional
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4
Relay Buddy
Relay Buddy Super
9.6
Exceptional
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5
LEQUDUO
LEQUDUO 9038 Relay Tester, 9038 Diagnostic Scan Tool Fuel Pump Relay Bypass Master Kit, Pack of 6, Plastic
9.5
Excellent
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6
Lisle
Lisle 56820 Relay Test Jumper, Yellow
9.4
Excellent
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7
Lisle
Lisle 69300 Master Relay Test Jump Set, One Size, Factory
9.3
Excellent
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8
Relay Buddy
Relay Buddy 12/24 Volt
9.2
Excellent
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9
Relay Buddy
Relay Buddy Electronic Specialties 191 Pro Test Kit
9.1
Excellent
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10
Relay Buddy
Relay Buddy ESI 193 Black 2.5" x 5" 12/24V Diagnostic Pro Test Kit
9
Excellent
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11
Relay Buddy
Relay Buddy Super Pro Kit
8.9
Very Good
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12
A-Premium
A-Premium AD100 Universal OBD2 Scanner Diagnostic Tool, Car Code Reader OBDII/EOBD/CAN Scan Tool, Check Engine Light/Read Clear Fault Codes/Smog Check/Live Data Stream/Battery Test, For Car Since 1996
8.8
Very Good
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13
ANCEL
ANCEL PB100 Automotive Power Circuit Probe Tester, 12V 24V Car Test Light Electrical Diagnostic Tool Master Kit AC DC Digital Voltage Short Finder, Relay Fuse Tester Trailer 3 System Thermometer 4
8.7
Very Good
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14
Autel
Autel PowerScan Automotive Circuit Tester, 12V 24V Power Circuit Probe Kit, Digital Multimeter/Relay & Diode Resistance Tool, for Frequency/Duty Cycle/Voltage Test, Activating Component, w/ 20ft Cable
8.6
Very Good
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15
Autel
Autel PowerScan PS100 Automotive Circuit Tester, Universal 12V 24V Power Circuit Probe Kit, Read AC DC Voltage Resistance, Component Activation, Short Finder, Test Ground & Continuity, w/ 20ft Cable
8.5
Good
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16
AUTOPHIX
AUTOPHIX BAS100 Car Battery Tester 12V 24V, Automotive 100-2000 CCA Battery Load Tester, Easiest Battery & Alternator Tester, Charging Cranking System Analyzer for Motorcycle Truck Boat ATV RV Marine
8.4
Good
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17
Fuse Buddy
Electronic Specialties Relay Fuse Buddy, red
8.3
Good
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18
OEMTOOLS
OEMTOOLS 27211 Relay Circuit Tester Automotive Relay Tester, Relay Bypass Switch Kit 24V/12V Relay Tester Automotive Kit For Vehicle Electrical System Maintenance
8.2
Good
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19
Performance Tool
Performance Tool 3009 Compact Cordless Automotive Relay Tester for 12 Volt 4 and 5 pin relays and More
8.1
Good
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20
Solary
Solary Automotive Smoke Machine Leak Detector - 12V DC EVAP Vacuum Diagnostic Tester for Pipe System
8
Good
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21
VDIAGTOOL
VDIAGTOOL V200 Pro Automotive Power Circuit Probe Tester Breaker Finder Tool, 12/24V Electrical Open Short Circuit Finder, Wire Tracer, AC DC Voltage Trailer Relay Fuse Test
7.9
Good
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22
MOTOPOWER
MOTOPOWER MP0515A 12V Car Battery Tester Automotive 100-2000 CCA Battery Load Tester Auto Cranking and Charging System Tester
7.8
Good
View on Amazon
23
MOTOPOWER
MOTOPOWER MP0514C 12V Digital Battery Tester Voltmeter and Charging System Analyzer with LCD Display and LED Indication - Red Rubber Paint
7.7
Good
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24
Electronic Specialties
Electronic Specialties 191A Relay Buddy Pro Kit
7.6
Good
View on Amazon
25
Lisle
Lisle 60150 Relay Pro 12V and 24V Relay Tester
7.5
Good
View on Amazon
Click here to learn more about these products.
allsun em415Pro Automotive Electrical Open&Short Finder Circuit Tester Tone Generator Cable Wire Breaker Tracker Fault Finder DC Less than 42V Probe Car Diagnostic Tools, Measuring12V battery circuit
LOCATING OPEN CIRCUITOpen Wire Detector, powered by 2pcs9V Batteries. It detects and alerts you immediately where a circuit is open. You can quickly and easily Locate short circuits, open connections, broken wires, current leaks and even trace wires. Transmitter and receiver LEDs show open or short circuit conditions.. CHECKING SHORT CIRCUITShort Circuit Finder Automotive,you can also find intermittent circuit problems by flexing wires or connectors and listening for a change in the receiver tone, 7 inch Flexible Probe Help Reaching Wires in Congested Places.. SUITABLE FOR DC 642 Volt CIRCUIT POWERElectrical Circuit Tracer will work on all kinds of circuits with voltages between 6 and 42 volt DC. such as those found in automobiles,trucks,tractors,boats,RVs,etc...With its wide working voltage range... OPERATION VIDEOAutomotive Short Circuit Tester, Check Out Our VIDEO on the Left Side, Internally Protected Against Power Surges and Overloads. Built-in Buzzer Sound Show Open or Short Circuit Conditions, Comes with a storage bag, easy to carry.. QUICK AND EASY DIAGNOSTICAuto Electrical Short Finder,Judge continuity of the cables or wires, and diagnose the break point. Time saver, making your repairs quicker, makes things easier to find troubles, Tried to find a fault in auto electric circuit..
KAIWEETS HT206D Digital Clamp Meter T-RMS 6000 Counts, Multimeter Voltage Tester Auto-ranging, Measures Current Voltage Temperature Capacitance Resistance Diodes Continuity Duty-Cycle (AC/DC Current)
True-RMS clamp meter This multimeter can accurately measure ACDC Current, ACDC Voltage, Frequency or Duty Cycle, Resistance, Capacitance and also provides Diode, Continuity and Temperature tests. True RMS for accurate measurements on non-linear loads. Easy to use for labs factories and household.. LowZ LPF Low input impedance helps prevent false readings due to ghost voltage. Low Pass Filter LPF for accurate measurement of variable frequency drive signals when measuring motors and transformer. To measure the current you need to clamp the meter around one of the wires and not the whole power cord.. NCV Detection Function Non-contact voltage detection effectively check electrical status through measuring EM field intensity without touching any wires The NCV button lies on the right side. Simply place your thumb on it and push.. Multi-function Two-color backlit LCD Display - When the voltage 80V, the current 3A, the LCD backlit screen turns red to warn you of high voltage LED Flashlight Temperature Measurement for liquids and air conditioning ports included K-Type Thermocouple Low Battery Indication Auto power off after 15 minutes inactivity.. Safety Service Safety standard IEC 61010-1, CAT III 600V. Double insulation. 36 Months product service provided. 724 Customer Service..
Lisle 20610 Inline Spark Tester, One Size, Factory
Gives a Visual Check of the Ignition System.. Quickly diagnose problems with all ignition systems. Connect the tool between the spark plug and the plug wire.. The tool is double-ended to offer a straight boot and a 90boot on one tool. With the engine running, the tool flashes a mirror image of ignition spark.. Patent 6,714,015.
Relay Buddy Super
Improved test finds bad relays effectively. Full 7 amp load flags intermittently failing relays. Three test results - GreenPass, RedFail YellowPass with caution. Greater coverage, tester alone checks 7 different 12 Volt relays. Fully automated, 10 cycle test verifies the condition of the relay.
LEQUDUO 9038 Relay Tester, 9038 Diagnostic Scan Tool Fuel Pump Relay Bypass Master Kit, Pack of 6, Plastic
These relay bypasses are great for electrical diagnostics, they help save a good amount of time in terms of narrowing down what could be wrong on a car. A must have for any mechanic's toolbox.. Installation is pretty simple just plug in the place of the fuel pump relay and direct control over the fuel pump circuit is realized in most domestic, Japanese, Korean and German applications. They can be mounted horizontally or vertically and stainless steel mounting screws are attached with panel, which can make the switch panel installed firmly based on your needs.. Package includes 6 pieces of relay bypasses.
Lisle 56820 Relay Test Jumper, Yellow
Set of four relay test jumpers make testing relays or live circuits quick and easy. Simply remove relay to be tested, insert correct jumper and insert relay into jumper. No need to pierce wires or connect multiple jumper wires. For more information check the main Lisle tool- 56810. Replacement part for Lisle tool- 56810.
Lisle 69300 Master Relay Test Jump Set, One Size, Factory
Includes 8 Jumpers to fit most popular relays. Includes Test Lead Kit for easily and securely connecting Relay Test Jumpers to a multimeter. Terminal Leads with switch, fuse and power options provide easy access to check current or voltage on many fuses and relays used on vehicles today. Also allows testing of relay configurations not covered by eight Relay Test Jumpers, like Volkswagen, BMW and other European vehicles. Relay Puller Pliers easily remove electrical relays weorks without piercing wires.
Relay Buddy 12/24 Volt
Tests both 12V and 24V relays. 3 diagnostic trouble codes help define the cause of the bad relay. Quick off-the-car relay tester. Checks relay coil switch contacts. Fails bad relays - GoodBad indication, green light for PASS, red light for FAIL with flashing trouble code.
Relay Buddy Electronic Specialties 191 Pro Test Kit
Kit includes Relay Buddy tester, 5 new relay adapters and blow mold case. Relay Buddy is a quick gono go tester for the most common automotive relays. With the included adapters, Relay Buddy now tests 5 different relay types and also tests shielded relays. Relay Buddy will fail the relay and light the red LED if any of the test cycle proves unsuccessful during the test session green light if relay is good. Settable to 4 and 5-pin relay and uses vehicle's 12 volts battery for power.
Relay Buddy ESI 193 Black 2.5" x 5" 12/24V Diagnostic Pro Test Kit
Tests 5 different relays, both 12V and 24V. 3 diagnostic trouble codes help define the cause of the bad relay. 193 Kit Includes 5 Relay Adapters and blow mold case. Quick off-the-car relay tester - checks relay coil switch contacts. Fails bad relays - GoodBad indication, green light for PASS, red light for FAIL with flashing trouble code.
Relay Buddy Super Pro Kit
Improved test finds bad relays effectively. Full 7 amp load flags intermittently failing relays. Three test results - GreenPass, RedFail YellowPass with caution. Wider test coverage with included adapters, checks 10 different 12 Volt relays. Fully automated, 10 cycle test verifies the condition of the relay.
A-Premium AD100 Universal OBD2 Scanner Diagnostic Tool, Car Code Reader OBDII/EOBD/CAN Scan Tool, Check Engine Light/Read Clear Fault Codes/Smog Check/Live Data Stream/Battery Test, For Car Since 1996
ANCEL PB100 Automotive Power Circuit Probe Tester, 12V 24V Car Test Light Electrical Diagnostic Tool Master Kit AC DC Digital Voltage Short Finder, Relay Fuse Tester Trailer 3 System Thermometer 4
What is a PB100 Probe TesterWith the PB100 probe tester, you can check voltage and ground signals in a typical DC circuit. However, the kicker is that you can also use it to send voltage and ground signals. It works like a test light that can power circuits or provide a good known ground. This way, you can effectively test components and circuits without having to break out the old alligator clips and jumper wires. You can power or ground a circuit directly through the top of the device.. What does it doThe PB100 is an essential tool for automobile user. It is needed for testing components on and off the vehicle, checking for the good and bad grounds, testing for continuity and diagnosing circuit failures. For example, you can use it to turn on a blower motor. You can run power window motors, windshield wipers, and even rear window defrosters. If the vehicle owner keeps it in his car he can check system failure on his own way no need to go to technician.. Easy to UseANCEL provides how-to guides and video tutorials to help you easily complete your repair work. With the press of a switch, you'll have an instant hot lead or ground lead. Use the probe tip and ground lead simultaneously to power up components right in your hand. Instantly check components for continuity as well as identify positive, negative and open circuits. Locate shorts without wasting fuses.
Autel PowerScan Automotive Circuit Tester, 12V 24V Power Circuit Probe Kit, Digital Multimeter/Relay & Diode Resistance Tool, for Frequency/Duty Cycle/Voltage Test, Activating Component, w/ 20ft Cable
Autel PowerScan PS100 Automotive Circuit Tester, Universal 12V 24V Power Circuit Probe Kit, Read AC DC Voltage Resistance, Component Activation, Short Finder, Test Ground & Continuity, w/ 20ft Cable
AUTOPHIX BAS100 Car Battery Tester 12V 24V, Automotive 100-2000 CCA Battery Load Tester, Easiest Battery & Alternator Tester, Charging Cranking System Analyzer for Motorcycle Truck Boat ATV RV Marine
Electronic Specialties Relay Fuse Buddy, red
Is it a circuit problem or a relay problem Relay Fuse Buddy can help diagnose the case.. In-circuit bypass switch controls power downstream of the relay.. Displays live circuit current - 20 Amps continuous - 30 Amps momentary. Turn on and off DC motors, fuel injectors, fuel pumps and see the amp draw. Wide coverage - includes adapters for 6 different relays.
OEMTOOLS 27211 Relay Circuit Tester Automotive Relay Tester, Relay Bypass Switch Kit 24V/12V Relay Tester Automotive Kit For Vehicle Electrical System Maintenance
Near-Universal Relay Tester Kit This automotive circuit tester comes with 6 popular auto relays and one universal relay tester lead, making it useful for a broad range of makes and models. Easy Operation Simply choose the applicable dummy testing relay, plug it into the fused relay block, connect car relay tester to vehicle's battery, and power on for circuit health reading. Total Electrical Troubleshooting Tool can test an entire circuit from the battery to the component Bypass relays for pressure testing, distributor or cam shaft adjustments, AC filling and more. Efficient and Effective These electronic test equipment kits allow you to identify at the push of a button if a wire, a part, or a relay is defective Cut relay related diagnosis time by 75. Convenient Carrying Case Everything you need for professional automotive diagnostics stays organized in one compact case It's easy to keep your diagnostic test tools organized and ready to go.
Performance Tool 3009 Compact Cordless Automotive Relay Tester for 12 Volt 4 and 5 pin relays and More
Designed to quickly test the condition of your relay out of the vehicle. Full self-contained, no need to clamp cables onto the vehicles battery. Test results provide goodbad indication green LED pass, red LED fail. Accurately check the relay coil for circuit breaks, and switch contacts. Used to test the most common 12 volt 4 and 5 pin relays on today vehicles. Compact design, nothing additional needed, and super easy to use. Requires 4 AA batteries included.
Solary Automotive Smoke Machine Leak Detector - 12V DC EVAP Vacuum Diagnostic Tester for Pipe System
Multifunction Our automotive smoke machine can perform various tests such as EVAP system test, car sealing test, fuel tank system test, exhaust system test, intake system test and various pipe fittings test, ect. It Could be used on all cars, motorcycles, snowmobiles, ATV, light trucks, boats, etc.. Working Principle The automotive leak detector tool will change special oilbaby oil or mineral oil into smoke, then blow smoke into sealed pipe system, you will find leak points in the pipe via the smoke. Please repair the part where leakage exists.. Easy to Use The automotive smoke tester comes with a hook allows you to hang it on your hood latch. Just add 20ml of baby oil or mineral oilproduct itself does not carry oil, then connect the detector with the DC12V battery, it can output thick smoke within 10s after turning on, thick smoke output detects even the smallest leaks.. Smart Protection This smoke tester has overheat freeze protection, the maximum temperature limit is 75C, ture on antifreeze protection at a low temperature of -20C. If it exceeds the working limit, such as over 75 , it will automatically turn off the power to secure the safety of both the operator and device.. Lightweight and Portable Most car smoke machine are bulky and heavy, which is not conducive to the transportation and storage of the equipment, and is only suitable for repair shops. Solary automotive smoke tester weighs only 3kg, to be small and light, not only for easy storage, but also for ease of use. It is an indispensable tool for all car owner.. Worry-free After-sales Service We provide you with one-year free warranty and lifetime technical support. No matter you encounter any problems during use, you can contact our customer service team at any time..
VDIAGTOOL V200 Pro Automotive Power Circuit Probe Tester Breaker Finder Tool, 12/24V Electrical Open Short Circuit Finder, Wire Tracer, AC DC Voltage Trailer Relay Fuse Test
ALL-IN-ONE TOOL FOR ANY CIRCUIT PROBLEM DIAGNOSISV200 Pro covers all circuit tests Circuit BreakerOpen TestTracing WireACDC Voltage TestDiode TestResistance TestPolarity TestContinuity TestGround TestActivate ComponentsSignal Circuit TestRelay, Fuse, Trailer Light Test. You can quickly easily Locate short circuits, open connections, broken wires, current leaks and even trace wires. Get this essential circuit tester today and save your time and costly trip to a dealership. COMPREHENSIVE POWER CIRCUIT TESTERSwitch to Mode I, youve just activated Power Circuit Probe Tester which supports 4 working modesACDC Voltage, Resistance and Diode. The electrical probe tester allows users to check 12V 24V electrical system instantly, tells you whether the wire or circuit is live, and which side of the circuit you are on, positive or negative. NOTE This circuit tester can be powered by either connecting to cigarette lightervehicles battery,no external battery needed. LOCATING BREAKER POINT EFFICIENTLYSwitch the V200 Pro All-In-One Circuit Tester Kit to Mode II, you will be able to use the breaker finder which can easily locate the circuit breaker point, open connections, broken wires, current leaks with tone change, even trace wirecable without damaging the insulation. This circuit breaker finder tool works on all kinds of vehicle circuit issues such as those found in car, SUV, mini van, truck, tractor, boat RV, with voltages between 6 and 42 volt DC.. COMPONENT ACTIVATION SENSORSIGNAL CIRCUIT TESTVDIAGTOOL V200 Pro power circuit probe kit can generate activation signals to electrical components like car lights, motors, windshield wipers, radiator fans, relay, fuel injector and etc to troubleshoot electrical problems locate auto short circuits if you keep getting blown fuses and also test various sensors, signal circuits to pinpoint the root cause to electrical issues when you have extracted DTCs from vehicle ECUs.. OVERLOAD PROTECTION TO PROTECT CAR ELECTRONICS This automotive electrical tool comes with short circuit protection. Whenever it gets overloaded, it just gonna shut down and restart, which is a safe measure to protect the device and car electronics. Useful Tip You can also use overload protection feature to test short circuit conveniently. NOTE If you received defective unit or it malfunctions, please reach us via vdiagtool2 outl ook c om for hassle-free replacement any time. 20FT EXTENSION CORD TO WORK ANYWHERE AROUND THE VEHICLE V200 Pro circuit tester automotive tool comes with 20 feet long cord plus 20 feet extension cord. Combining the feature that it can be powered by the cigarette lighter, and alligator clip for convenient ground connection, you can test electrical circuit system anywhere around the vehicle. No more worrying about short cord while testing electrical system NOTE Mode II-circuit breaker tester is powered by 1pcs 9V Battery.
MOTOPOWER MP0515A 12V Car Battery Tester Automotive 100-2000 CCA Battery Load Tester Auto Cranking and Charging System Tester
A MUST HAVE TOOL IN YOUR GARAGE - With up-to-date testing technology, it provides a quick reading to determine whether a vehicle battery needs a jump or replacement and also the output status of the alternator. All you have to do is log in and play. Save your time and money.. BATTERY HEALTH CONTROL - Applied with the latest test algorithm, the tester will analyze the battery and get the results in seconds, including health status, charging status, internal resistance and test conclusion mediocre, good, excellent. All types of 12V 100-2000CCA lead acid batteries can be tested.. START AND CHARGE SYSTEM TEST - Test the starting voltage of the alternator when starting the engine to see if it is low or under normal conditions. Check the continuous power of the alternator when the engine is running to see if the alternator provides adequate power to the battery and electrical system.. Real Time Wave Display Data Printing - When you need more details about the performance of your battery or alternator when working, you can use the wave viewing function to monitor the output curve in real time. It gives you all the detailed changes of the output.. 3 inch color LCD screen and 9 languages supported - The 3 inch color LCD screen 240 x 320 pixels is user-friendly and easy to read. Give you a more comfortable viewing experience with every inspection. 9 languages supported - English, Spanish, French, German, Italian, Russian, Portuguese, Chinese and Polish..
MOTOPOWER MP0514C 12V Digital Battery Tester Voltmeter and Charging System Analyzer with LCD Display and LED Indication - Red Rubber Paint
Easy Operation - Connect and Go. It provides a quick reading to determine if a vehicle battery needs a jump or replacing and also the alternator output status. Various Colored LEDs indicate the battery or the alternator status.. Safety Ensured - Reverse-hookup and Over-voltage protection, making it safe and simple to use.. High Accuracy - With a Four-character lighted digital display, the voltage testing accuracy will be close to 0.01volt.. Testing Range- 420V DC. If the voltage is under 4volts, the screen will display - LO If the voltage is above 20volts, the screen will display - HI. Rubber Paint Body to achieve the original quality - Red Rubber Paint on the body surface to achieve the best feeling. As the inventor and the manufacturer of the tester, we are keen on the details to ensure the brand quality and the good custome buying experience..
Electronic Specialties 191A Relay Buddy Pro Kit
Kit includes Relay Buddy tester, 5 new relay adapters and blow mold case. Relay Buddy is a quick gono go tester for the most common automotive relays. With the included adapters, Relay Buddy now tests 5 different relay types and also tests shielded relays. Relay Buddy will fail the relay and light the red LED if any of the test cycle proves unsuccessful during the test session green light if relay is good. Settable to 4 and 5-pin relay and uses vehicle's 12 volts battery for power.
Lisle 60150 Relay Pro 12V and 24V Relay Tester
A straightforward relay tester that will easily and quickly test most 12 and 24 volt DC automotive relays. Tests relays by simply clicking the test leads onto the relay terminal pins using a 12 or 24V DC power source. Automatically determines how the relay coil and contacts are configured. This eliminates the need for specific tester footprints or adapters.