The IDEAL® E-Z Check® Plus GFCI Circuit Tester is a reliable tool that tests 3-wire, 120 V AC circuits for correct wiring, and common faults including open ground, reverse polarity, open hot, open neutral, hot on neutral, and hot and ground reversed with open hot. Additionally, it simulates ground faults for testing GFCIs. Designed with a no-slip ergonomic grip for maximum comfort, it features premium neon lamps to clearly indicate readings and a tough, impact-resistant case for durability. With the E-Z Check® Circuit Tester, you can confidently pinpoint circuit issues with precision and ease.