Extech Electrical Testers

This phase indicator identifies clockwise or counter-clockwise wiring configuration via direction of arrow on display.

Browse Extech 3 Phase Sequence Indicator.

Three Insulation test ranges with a live circuit indicator, as well as low resistance and AC voltage measurements. The Power Lock On feature allows hands-free operation.

Browse Extech Analog Insulation Tester.

This Clamp-on device allows the user to measure ground resistance without the use of auxiliary ground rods. This device can only be used on multi-grounded systems. It is not necessary to disconnect the ground under test.

Browse Extech Clamp-On Ground Resistance Tester.

A digital high voltage insulation tester (120V) with wide range measurement up to 5kV and insulation resistance to 60GΩ.

Browse Extech Digital High Voltage Insulation Tester.

Extech Insulation Testers & Dataloggers, High Voltage Insulation Testers. RS-232 PC interface with Windows 95/98/NT/2000/ME/XP compatible software.

Browse Extech Digital Insulation Testers.

Extech Ground Resistance testing and Voltage/Frequency testing for measuring the Earth. Check resistance between earth and grounding rod.

Browse Extech Earth Ground Resistance Testers.

This device can measure Earth Ground Resistance (in 3 ranges), Earth Voltage and Resistance (up to 200kΩ), and AC and DC voltage. This device was designed to meet EN61010-1 safety standards.

Browse Extech Earth Ground Resistance Tester Kit.

Provides three test ranges plus continuity and AC/DC voltage measurement. A handy test lock feature and a data hold function are also included.

Browse Extech Electrical Testers & Megohm Meters.

This instrument is a portable easy use 3-1/2 digit, compact sized digital megohmmeter designed for simplicity one hand operation. Provides 1000V to test insulation.

Browse Extech ProbeMeter Megohmmeter.