Circuit Testers

These testers use needle point test prods to indicate continuity

Has a strong 2khz audible tone to signal continuity

This sensor detects 50-1000VAC through wire or cable with no metallic contact.

Plug the transmitter into the outlet and the receiver will identify the correct circuit.


By applying a tone signal to a wire pair or single conductor, and using an inductive amplifier, permits technicians to identify the conductor within a bundle, at a cross-connect point or remote end.

Line tester verifies 2, 3, 4-pair, voice or data channels.

Features easy method of isolating problems by checking if signals are being generated by computer or terminal equipment. Monitors the most commonly used RS-232 lines.

Lil Devil Magnetic Probe

Identifies faults in 3-wire, 125 VAC circuits.

This popular tester has 5" insulated leads with tip prods for safe and easy testing of both AC and DC circuits - 80V AC to 600V AC or DC.

Test GFCI breakers for proper wiring and operation with this socket tester.