Electrical Testers

Super Relay Tester

Tests a wide range of 12 Volt batteries, quickly and accurately, AGM included. Results display actual CCA capacity of the tested battery. Also tests the starting/charging system for low cranking voltage and faulty charging voltages. LED's show test...

DMM test leads (red, black) with safety shrouded, standard diameter banana plugs Heavy duty EPDM insulation Length 1.5 m

Quickly and easily check voltage, power, ground and circuitry without the need to hook up complex equipment Tall, easy to read LCD display Red LED indicates power (+) and green LED indicates ground (-) Measures from 4.0 to 60.0 Volts DC Wire stretches to...

Easily Tests Most 12 And 24 Volt DC Automotive Relays. Tests relays by simply clipping the test leads onto the relay terminal pins using a 12 or 24v DC power source. Tests a wide range of 4 and 5 pin relays Automatically determines the relay...

Enables technicians to quickly test electronic control valves in variable displacement compressors to determine if functioning correctly and eliminating compressor misdiagnosis. The included Electronic Variable Compressor test module varies voltage...

Relay Fuse Buddy acts as a convenient relay bypass switch with live amperage readings 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 relay Displays live...

Safely and Accurately Test Electrical Systems. Large, Easy to Read LCD Display with Backlight. Measures AC/DC voltage/current up to 600V and 10A,capacitance, diode, duty cycle, frequency, resistance, temperature and transistor. Includes 13 Functions and...

Heavy-duty digital pressure/temperature analyzer with four pressure input receptacles and protective boot. Set includes: No. 3491-02 (5,000 psi) transducer, No. 3491-13 20' cable, No. 3500-05 bead-type temperature probe, assorted fittings.

10 piece kit designed for backprobing, diagnostic testing & electrical troubleshooting Standard 4mm banana plug, works test kits in the field 2 pcs Spoon Probe Backprobers for round connectors (#616) 4 pcs of Mini Back Probes/Wire Piercers (#618) 2...

6 pc Test Probe Kit appropriate for automotive, heavy-duty, marine, equipment, small engine, etc. Quality probes will provide trustworthy readings Great starter kit, connects to DMM’s, digital scopes and most other test equipment Includes standard 4mm...

Digital LCD Wide Range Positive and Ground Circuit Tester features a digital display to read the accurate voltage value, which can be measured from 4-60V. The LCD indication for power in this tool is red and green is for ground.