GW-Instek-GPI-625-Analog-Safety-Tester-GW-Instek-GPI-625-P-The-GW-Instek-GPI-625-is-a-simple-2-in-1-AC-Withstanding-Insulation-Resistance-analog-safety-tester-geared-toward-accurate-hazard-free-automatic-testing-Auto-testing-can-be-set-to-run-withstanding-&-insulation-resistance-testing-in-any-preferred-order-The-optional-GHT-106R-remote-controller-order-code-90-6272-can-be-used-to-remotely-run-the-timer-&-tests-P-P-The-GW-Instek-GPI-625-has-dedicated-input-output-terminals-and