We provide quality products and good service.Features:100% new and high quality.MS5902 disconnect switch detector PREFIX = OSecurity Level IEC1010-1CATII 600VBreaker convenient search function to quickly find and target branch circuit breakers loop(With MS5902T use)Automatically adjust the sensitivityVisual and audible indicationTest function tripod socket socket connection status LED display correct open groundGround and FireWire reverseZeroline and FireWire reverseAutomatically and quickly finds correct breaker or fuse.Quickly and easy identifies conditions of circuit socket.Works on 110V ACOperating temperature: 0 ~ 50℃ Specifications: Power Supply: 1 * 9V battery/6F22(not included)Color: Green & blackPlug type: US plugVoltage: 110VPackage Includes: 1 * Circuit Breaker LED Tester Finder Receiver1 * Circuit Breaker LED Tester Finder TransmitterMy store，make better choice for you.