Feature: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 48V1000V when power on, short press the S button to turn green, and it can be switched to 12V1000V 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 DetectorMaterial: ABSModel: ZT-DB02Battery: 2 x 1.5V AAA Battery(Not Included)Purpose: Identification of Neutral and Live Wire, Line Breakpoint Search, Sensitivity AdjustmentBasic Parameters:AV Voltage Range: High Sensitivity: About 12-1000V (Detection Range Indicator Light is on)Frequency: 50Hz/60HzAlarm: Sound and Light Dual AlarmFlashlight: White LEDAutomatic Shutdown: SupportLow Battery Warning: SupportOperating Temperature: 0~40Storage Temperature: -10~50Altitude: <2000m.Package List:1 x Voltage Detector1 x Manual