Features: 1Double Indication: When the voltage tester detects along the line the indicator light does not light up and the beeping stops or slows down is the location of the breakpoint. 2Adjustable Sensitivity: Voltage tester supports sensitivity adjustment AC voltage detection range can be switched between high sensitivity and low sensitivity. 3IP67 Waterproof: Voltage detector is IP67 waterproof fully airtight and waterproof and can be used in wet locations for live breakpoint detection line detection etc. 4Non Contact: When the voltage detector probe is placed close to the AC voltage the signal indicator will light up and the beep will vary with the signal strength. 5Compact And Portable: Compact voltage test pen is easy to carry and the pocket sized hook allows you to slip it into your clothing pocket for easy access at all times. Specification: Item Type: Voltage TesterMaterial: ABSOperating Environment: Working Temperature: 0~40Storage Temperature: -10~50Humidity: 95%Safety Class: CAT. III 1000V CAT. 600VPower Supply: 2 x 1.5V AAA (Shipped without Batteries)Weight: Approx. 65g/2.3oz Package List: 1 xVoltage Tester (Battery Not Included)1 x Manual