This circuit tester is a great way to test voltage output in your electrical systems. It has a double pole system, that voltage can be checked from either one. This is an easy to use circuit tester that will test rated voltage range: 110-550V. Voltage indication 110/ 220/ 380v AC, 150/300/500v DC. Voltage measure: 50-500hz

* Voltage tester - voltage indication - 110, 220, 380v AC & 150, 300 & 500v DC

* Rated voltage range: 110-550v - voltage measures from 50-500hz

* Voltage tester poles are 7.25-inches and 5-inches long

* Auto voltage range detected with LED light display

* Easy to use - powered by item being tested