Anpro Non Contact Voltage Tester Circuit Tester and Receptacle Outlet Tester Set with GFCI - Black+Grey Voltage tester: Test anything from a Standard Outlet up to 1000 Volts, absolutely necessary for remodeling, electrical, and/or demolition projects. Voltage tester: Auto power-off in 5 minutes, Microprocessor controlled low-battery indicator Voltage tester: : Bright LEDs flashlight illuminates dark area and upon detection Outlet Tester: Clear status indication graph?GFCI Test Button Outlet Tester: Three bright color coded neon indicator lamps, Hi-Impact ABS housing