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 ST06 is an electrical socket tester that can detect the most common wiring faults of Wire Correct, Open Ground, Open Neutral, Open Hot, Hot/ground Reverse, Hot/neutral Reverse, and Dual Open (neutral & ground) in standard 3-wire and GFCI electrical outlets. USER-FRIENDLY PLUG TESTER - Just plug the socket tester into the standard outlet, and it show the result on the screen within 3 seconds. The auto-hold function is convenient for hard-to-reach outlets, bright LED lights illuminate green and red for easy visual indicators. Plug Type:US Plug, it applies to Canada, India, Mexico, Thailand, Taiwan, the , the Philippines and so on. Voltage:AC110V Colour:Orange Material:Plastic Package Contents: 1 * Outlet Socket Checker Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.