There is no wear or use whatsoever.
eBay
The outlet tester is used to verify that the outlet can provide power to a device plugged into it. Also, allows for the check of trip function for GFCI. Will not test for ground and neutral reversed, ground and neutral wired together, ground fault circuit interrupter (GFCI) in a circuit.
eBay
GFCI OUTLET COMPATIBLE: Confirms the proper operation of ground fault protective devices in GFCI outlets. COMPLETE OUTLET TESTER TOOL KIT: Includes GFCI Tester (Cat. Klein Tools Receptacle Testers are designed to detect the most common wiring problems in standard and GFCI receptacles. ).
eBay
【Double Layers Design】: The upper layer of the electrical tester case is universal with the ET310 circuit breaker detector, socket repair tool kit, and RT250GFCI socket tester. 【6 Elastic Bands】: The portable case adopts 6 highly elastic bands of different sizes, and the closure can be flexibly adjusted to accommodate tools of different sizes.
eBay
Lightly used from our home remodel project. Works great , comes with new battery and original packaging. Can be used to find which outlets are attached with which circuit breakers. Also can test regular and GFCI outlets for correct wiring and grounding.
eBay
Outlet Tester - Advanced Outlet Tester for quick detection of proper wiring of outlets. Designed with RCD/GFCI Test Button - Power Outlet Receptacle for proper wiring and RCD/GFCI trip functionality.
eBay
Socket Safety Tester List: Socket Tester 1+Manual 1. It can easily test whether your socket is safe, and it is a good helper for the electrician! Features: 1. Detect for 110V to 125V AC circuit; 2.
eBay
Outlet Tester - Advanced Outlet Tester for quick detection of proper wiring of outlets. Designed with RCD/GFCI Test Button - Power Outlet Receptacle for proper wiring and RCD/GFCI trip functionality.
eBay