Feature:1. Wire tester: The automatic socket tester can quickly detect whether the socket wiring is correct, and can solve your problem immediately.2. Live test: The socket tester can be used to detect whether the neutral wire, live wire or ground wire is properly connected, and indicate which wire is missing.3. RCD function: This socket tester is designed with RCD technology, which is more practical for testing wires and electrical energy.4. Indicator light judgment: There are multiple indicator lights on the tester, which can indicate the location of the socket, help you judge the status of the socket in time, and better protect the household wires.5. Space saving: The household socket tester is small in size, light in weight and space saving.Specification:Name: Electric socket testerAccuracy: ± (2% + 2)RCD test: 30mA/5mAProduct use: power polarity test, leakage test, test whether the ground wire is livePackage List:Electric socket tester * 1User manual * 1