IDEAL 61-051 EZ Check Plus Circuit Tester

No-slip ergonomic design maximizes comfort
Premium neon lamps prevent false readings
Tough, impact-resistant case
Tests GFI receptacles for proper operation

Tests for correct wiring,open ground,reverse polarity open hot, open neutral, hot on neutral, hot and ground reversed with open hot and ground fault interruption in 3-wire 125V AC circuits
5-year warranty