Features: 1MULTIFUNCTIONAL: A multi purpose detection tool, enough to meet the needs in different scenarios, including wall detection, break point wire finding and socket testing. 2DURABLE AND RELIABLE: Made of selected ABS material with high durability. It can withstand prolonged use and various working environments to ensure a long service life. 3POWER PLUG: Equipped with for different power standards, the design facilitates you to use the device better. 4EASY TO CARRY AND USE: Built in a 6f22 battery (shipped without battery), it can be powered by 9V. It is an easy to carry tool so that you can use it anytime and anywhere. 5WORKING ENVIRONMENT: Suitable for use in the working environment at an altitude of less than 2000 meters to ensure its normal operation. Specification: Item Type: Circuit Breaker Tester Socket TesterMaterial: ABSWeight: Approx. 313g / 11ozBattery: 1x6f22, 9V (Excluded)Altitude: <2000m / 6561.7ft Package List: 1 x Emitter1 xReceiver 1 x Storage Bag1 x Instruction Manual