The Chex-Zit™ is a combination continuity and electrical current tester used for performing routine diagnostics on circuits and wiring (both high and low voltage applications). The Chex-Zit is made of aircraft grade aluminum and buffed to a durable satin finish. A bright red LED indicates when continuity (no open circuits) or voltage is detected.
Use the Chex-Zit for checking Continuity in alarm or other circuits, verify good Earth grounds, transformers or other electrical wiring.
When diagnosing AC wiring (up to 120 volts) the Chex-Zit’s LED glows brighter on the “hot” side