Uni-T-UT531-Series-Insulation-Resistance-Multimeter-Uni-T-UT533-The-UNI-T-UT531-multimeter-combines-two-powerful-tools-in-one-The-multimeter-is-True-RMS-&-feature-packed-making-this-an-ideal-test-meter-for-many-applications-including-work-on-motor-repairs-generators-cables-&-switch-gear-BR-The-insulation-resistance-tester-function-of-the-UT531-allows-for-fast-testing-on-a-range-of-voltages-&-can-also-be-used-with-the-remote-switch-probe-for-fast-safe-testing-Uni-t-Insulation-Res