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:: MASTECHModel: MS5902Operating voltage: AC 110 V220 VPlug type: US plug, EU plug (optional)Material:ABSKolor: black greenReceiver Size: 20*3.8*5cm7.9*1.5*2.0inSocket Tester: 6.3*7*5.5cm2.5*2.8*2.2inPackage weight: approx. 298 g10,5 oz Package List:1 * Socket Tester with Transmitter1 * Circuit Breaker Finder with Receiver