Gardner Bender Outlet and GFI Tester is a reliable ground fault receptacle tester and circuit analyzer designed for easy and accurate testing. This tester evaluates ground fault receptacles by overloading the circuit and tripping the GFI, ensuring safety and proper function. It tests for seven critical conditions including ground fault interruption, open ground, open neutral, open hot, hot/ground reverse, and correct wiring. Simply plug the tester into any 110/125V AC ground fault receptacle and press the black button to overload the circuit. The tester is UL listed for quality assurance and comes in a bright yellow color for visibility. Backed by a 1-year limited warranty, this tool is packaged individually in a clamshell for convenience and protection. Model Number: GFI-3501