MS5902 Automatic Circuit Breaker Fuse Finder US/EU Plug Socket Tester Features: 1. The circuit breaker finder can automatically adjust sensitivity and find the target circuit breaker or fuse quickly. 2. The socket tester can test whether triangle socket connection is correct and 3 indicator lights can show you the socket condition. 3. With flashlight, convenient to use in the dark environment. 4. Support low battery warning. 5. Suitable for power grid rebuilding and engineering acceptance in office, home, factory, etc. Specification: Model: MS5902 Working Voltage: AC 110V/220V Plug Type: US plug(110V) , EU plug (220V) ( Optional ) Please note that The Working voltage of US Plug is 110V, and the working voltage of EU Plug is 220V Material: ABS Color: Black + Green Receiver Power Supply: 1 x 9V Battery ( Not included ) Receiver Size: 20*3.8*5cm / 7.9*1.5*2.0in Socket Tester: 6.3*7*5.5cm / 2.5*2.8*2.2in Packet Weight: Approx. 298g/10.5oz Package list: 1 * Socket Tester with Transmitter 1 * Circuit Breaker Finder with Receiver Note: When the yellow LED is on, please replace the battery in time.