CLEAR LCD COLOR DISPLAY - for electrical outlet tester is designed with a large VA reverse display color screen for easy visual indication, even in sunlight or dimly lit areas,more intuitive than other socket tester on the market, can better distinguish the data at a glance.The clear LCD Readout can show the results of wiring conditions,voltage, and the time required to trip a GFCI device, no need to look at a chart to understand results,allowing for quick and accurate troubleshooting. OUTLET TESTER WITH GFCI - The receptacle tester is designated for Standard 3-wire 120V electrical outlets.Test GFCI trip time in seconds to find out if the trip breaker is functioning.It can detect and identify common wiring faults, ensuring electrical safety and proper functionality of GFCI receptacles, it can be used for plug security testing in homes, factories, office, or buildings. Note: Please test the GFCI on with the correct wiring and circuit breaker installed. DETECT COMMON WIRING FAULTS - for