Single Function Installation Testers

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ERT 1557

ERT 1557

The ERT 1557 earth resistance tester is suitable for use on 110V, 230V and three phase electrical systems, this special lightweight unit provides accurate Earth electrode resistance measurement without disconnecting the electrode. View Product

IRT 1557

IRT 1557

The IRT 1557 is a handheld insulation resistance and continuity tester. It performs measurements according to BS 7671 17th Edition Wiring Regulations and Part P. View Product