Function: 1. The circuit breaker finder can automatically adjust the sensitivity and quickly find the target circuit breaker or fuse. 2. The socket tester can check whether the triangular socket connection is correct, and 3 indicator lights can show the socket status. 3. With flashlight, convenient to use in dark environment. 4. Supports low battery warning. 5. Suitable do power grid restoration and engineering acceptance in office, home, factory, etc. Specification: Characteristics: 1. The circuit breaker finder can automatically adjust the sensitivity and quickly find the target circuit breaker or fuse. 2. The socket tester can check whether the triangular socket connection is correct, and 3 indicator lights can show the socket status. 3. With flashlight, convenient to use in dark environment. 4. Supports low battery warning. 5. Suitable do power grid reconstruction and engineering acceptance in office, home, factory, etc. Specification: Brand: MASTECH Model: MS5902 Operating voltage: AC 110 V/220 V Plug type: US plug, EU plug (optional) Material:ABS Kolor: black green Receiver Size: 20 x 3.8 x 5cm/7.9 x 1.5 x 2.0in Socket Tester: 6.3 x 7 x 5.5cm/2.5 x 2.8 x 2.2in Package weight: approx. 298 g/10,5 oz Package List: 1 x Socket Tester with Transmitter 1 x Circuit Breaker Finder with Receiver