Locating Circuit Breaker Fuse: AC Circuit Breaker Finder helps quickly and easily locate specific breaker or fuse that controls your wall socket or plugs, lighting, etc. Avoid shock hazards and poor installation by checking your wiring configuration. Automatic & Led Flash: Circuit Breaker Tester, automatically and quickly find correct breaker,The transmitter injects a signal onto the circuit, which can be detected by the receiver.The receiver beep and its green,LED flash when the signal is detected. Non-Contact Voltage Sensor: Circuit Breaker Detectors uses non-contact voltage sensor.Work for either or fuses;Exchangeable power tips for the transmitter.Once the transmitter is in place, it transmits a signal onto the circuit which can be detected by the receiver. Handy Electrical Tool: Electrical Circuit Detector very good electrical tool 4 Pros or anyone. You can use it to check electrical outlets and devices in to make sure proper wiring and identify in saves so much time. Plug Type:EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so on. voltage: AC220V Colour:As Shown Material:Plastic + Metal Due to different batches, there may be differences in product appearance and printed text, which not affect use Package Contents: 1 set * line tester Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.