Feature: 1. AUTOMATIC SENSITIVITY ADJUSTMENT: The circuit breaker finder can automatically adjust the sensitivity to quickly find the target circuit breaker or fuse to ensure safety issues such as home electricity 2. INDICATOR LIGHT DESIGN: The socket tester support low battery warning, can test whether the triangular socket is connected correctly, and 3 indicators can show the socket condition 3. EASY TO READ: The socket grounding tester with flashlight is convenient to use in the dark environment, and can quickly determine whether the wiring is correct, 0 wire missing, reverse ignition and other problems 4. SCOPE OF APPLICATION: Circuit breaker search tool is suitable for office, home, factory and other places kitchen or bathroom grid reconstruction and engineering acceptance, to protect the safety of electricity 5. FAST AND EFFICIENT: Sound and light alarm of circuit breaker finder provide clear indications for quick and efficient circuit break point finding, easy to identify and differentiate between lines Specification: Item Type: AC Circuit Breaker Finder Material: ABS Battery: 1 x 6F22 9V battery(not included) Alarm: Sound and light alarm Neutral Wire or Live Wire Judgment: Yes FIND Sensitivity Adjustment: Yes. Package List: 1 x Circuit Breaker Finder1 x Socket 1 x Storage Bag