Features 1、Sound And Light Alarm: Intelligent recognition and automatic detection of voltage detector, sound and light alarm, clear at a glance, support for low battery alarm. 2、LED Flashlight: The voltage meter with LED flashlight lighting makes the operation easier, more convenient to use in a narrow, dark space, and ensures safer use. 3、Multi Purpose: This contactless sensitive voltage tester has a wide range of applications, which can be used for live wire breakpoint detection, line inspection, etc, and the test is accurate. 4、Dual Range: The default sensitivity is 48V‑1000V when power on, short press the S button to turn green, and it can be switched to 12V‑1000V mode, easy to use. 5、Compact: AC voltage test pen, small and exquisite size design, easy to carry, pocket sized pen hook allows you to put it in your clothes pocket, convenient to use at any time. Specification Item Type: Voltage Detector Material: ABS Model: ZT-DB02 Battery: 2 x 1.5V AAA Battery(Not Included) Purpose: Identification of Neutral and Live Wire, Line Breakpoint Search, Sensitivity Adjustment Basic Parameters: Frequency: 50Hz/60Hz Alarm: Sound and Light Dual Alarm Flashlight: White LED Automatic Shutdown: Support Low Battery Warning: Support Operating Temperature: 0~40℃ Storage Temperature: -10~50℃ Altitude: <2000m Package List 1 x Voltage Detector 1 x Manual