Circuit Testers
Displaying 1 to 23 (of 23 products)
Lisle 24550 Computer Safe Circuit Tester
Indicates polarity Safe for automotive computers Wont damage sensitive electronic components Draws less than 21mA at 12-Volts DC Operating range 3-28-Volts The red light indicates positive polarity, green indicates negative polarity
Lisle 25600 "Handy Hooker" Circuit Tester
Hooded Probe Protects Your Fingers and Automatically Centers the Wire. Small size allows easy use even in the tightest places. Quickly test low voltage up to 28 volts. Alligator clip grounds tester.
Lisle 28400 Heavy Duty Circuit Tester
Quickly tests low voltage up to 12 Volts A heavy duty circuit tester for lifetime use The probe, handle, cord and clamp are reinforced for extra durability Comes with a strain relief spring on the cord Cord is 49
Lisle 29050 Digital Circuit Tester 3-30V
360 visibility of polarity Operating range 3-30 volts DC to work on most vehicle electrical systems The probe is insulated to prevent the possibility of shorting the side of the probe to other components 47" cord and heavy-duty alligator clamp for…
Lisle 56810 Relay Test Jumper Kit
Set of Four Relay Test Jumpers Make Testing Relays or Live Circuits Quick and Easy. Set includes four jumpers to fit the most popular size relays on domestic and import vehicles. Simply remove relay to be tested, insert correct jumper and insert re…
S & G Tool Aid 27000 6/12 Volts Heavy Duty Circuit Teste
Checks 6 and 12 volt systems Heavy duty battery clip 5' of tough, flexible, heavily insulated rubber wire Designed to withstand the most rugged use
S & G Tool Aid 27300 6/12 Volts Heavy Duty Circuit Tester
These Circuit Testers feature an extra long wire that stretches up to 12 feet for use, then automatically retracts. Quickly and easily check electrical circuits and accessories on 6 and 12 volt systems. Great for use on cars, trucks, boats, trailers,…
S & G Tool Aid 28200 12/24/42 Volt Circuit Tester
For 12 and 24 Volt and 42 Volt Hybrid systems Computer safe - draws 3 milliamps at 12 Volts Has two LED's for easy voltage identification: blue for 12 and 24 Volts and red for 42 Volts Wire stretches to 10 feet for use, then automatically retracts…
S & G Tool Aid 28300 Digital Circuit Tester
Measures from 5 to 28V DC LED indicates Green for ground and Red for power Cord stretches up to 11 feet Computer safe (not for use in testing air bags)
Astro Pneumatic 7763 12/24 Volts Digital LCD Circuit Tester
Clear LCD display for accurate voltage readouts Small, ergonomic design for easy use in confined areas For use on cars, boats, trailers, vans, RV's, motorcycles, airplanes and snowmobiles Needle-sharp stainless steel probe allows for easy piercing…
Thexton 121 Wirehawk 12V Circuit Tester
Wirehawk requires just one hand to test circuits in hard-to-reach areas Works two ways: Captures and pierces wire with unique hook tip design or can be used as an ice-pick type tester If circuit is live, bulb in handle lights up Has 16 gauge, 44-i…
ATD Tools 5500 Primary Circuit Tester
6 and 12V. Locates shorts, open circuits and grounds. Use with ignition on. Clip to ground anywhere on vehicle and use probe to make contact with wire or cable being tested. Bulb indicates condition of circuit.
ATD Tools 5501 High/Low Voltage Trouble Shooter
Two testers in one. Check spark plugs on secondary or high voltage circuits. Check breaks in radio resistant hookups and pin points cracks in distributor caps. Also use as a continuity tester for low voltage circuits. Equipped with 36 lead.
ATD Tools 5513 Heavy-Duty Circuit Tester
Easily checks 6 and 12V systems. Has 5 ft. heavy-duty lead. Tough plastic handle lights up if circuit is good. Lead remains flexible in low temperatures.
ATD Tools 5597 Digital High Current Probe/DMM
37 Test ranges 10 Test functions Auto power off Auto-ranging, data hold Continuity beep Overload protection 1.5 clamp opening Temperature probe included 9-Volt battery included Carrying case included TEST RANGES: AC & DC Amps: 0-40A, 400A,…
ATD Tools 5623 Heavy-Duty Extra Long Probe Circuit Tester
Long probe to reach into tight places. New coil cord design for ease of use - stretches up to 9. Easily checks 6 and 12V systems. New full size comfortable acetate handle lights up when circuit is good. Leads remain flexible in low temperatures. Prob…
ATD Tools 5624 6/12 Volts Heavy Duty Circuit Tester
New coil cord design for ease of use, stretches up to 9. Easily checks 6 and 12V systems. New full size comfortable acetate handle lights up when circuit is good. Leads remain flexible in low temperatures.
Sheffield Research 8002 Professional Cordless Circuit Tester
Solid state electronic voltage tester Needs no wire or clip to ground Rugged chrome metal construction Buzzer and LED indicator High Impedance
Steelman PRO 95839 23-Piece Universal Terminal Tool Kit
Easily removes terminals from electrical connectors Eliminates damage to wires or to terminal blocks Handles designed for extra grip and comfort Handles individually marked for quick reference against application chart Covers BMW, Opel, VW/Audi, …
Lisle 26250 Low Circuit Tester
Quick check both AC and DC current up to 28 volts with power on. Helps locate shorts or breaks in wiring. Complete with insulated grounding clip.
Displaying 1 to 23 (of 23 products)