Feature: 1. ACCURATE AND PORTABLE: Voltage detector with live voice broadcast, measurement real time broadcast making measurement more convenient and portable 2. LINE BREAKPOINT DETECTION: Electrical tester pen uses fast detection along the line, when the signal is weak, the buzzer is slow or no buzzer, is the breakpoint location 3. ADJUSTABLE SENSITIVITY: Press the S key of tester pen to adjust the sensitivity. The five levels can be easily adjusted, the first level by default has the lowest sensitivity and fifth level has the highest sensitivity 4. CLEAR AND EFFICIENT: The voltage detector has a high light display, making it easier to read data and detect more efficiently, enabling accurate line measurement and clear viewing of the screen values in dim environments 5. SOUND AND LIGHT ALARM: Non contact power cable tester lets you, no longer afraid to see the measured position in the dark environment, eliminate the risk of electric shock Specification: Item Type: Non Contact Voltage Detector Material: ABS Product Model: VC1019 Probe: Transparent NCV sensing head Alarm Mode: Sound and light alarm and voice Flashlight: White LED light Indicator Light: Red shock light Frequency: 50Hz/60Hz Battery: 2 x AAA batteries(not include) Neutral Wire Live Wire Judgment: According to the signal strength to judge, the strong signal is the live wire NCV Sensitivity: Sensitivity can be increased by sensitivity adjustment key Safety Level: CE CATII 1000V or CATIII 600V Automatic Shutdown: The test pen will shut down automatically if does not operate within about 5 minutes. Package List: 1 x Non Contact Voltage Detector1 x User Manual