Features: Non-contact AC voltage detection Light flash and alert beeper sounds if identify AC voltage existence Automatic or manual testing mode to select Spinning the sensitivity adjusting knob to adjust the sensitivity freely in manual mode Smart voltage strength detection: automatic light up green, yellow, red LED lamp to indicate low, moderate or high voltage existence Low-sensitivity mode for uncovered lines detection; high-sensitivity mode for hidden lines detection, such as in wall and under earth Distinguish zero/live wire according to the sensitivity Convenient spotlight design for easy testing in dark environment Auto power off if there is no any operation within 5 minutes Low battery indication Designed to international safety standard CE CAT.II 1000V Specifications: Model: AVD06 Display type: simulation only AC Voltage Range: 12V 1000VManual Mode; 48V 1000VAuto Mode Frequency: 50Hz/60Hz Power: 1 x 9V 6F22 Battery Not Included Size: 174mm*47mm*35mm Weight: about 68g Working temperature: 0-40 degC Power: 9V 6F22 battery not included Accuracy level: 1 Detection mode: automatic / manual Alarm type: sound and LED light Indicator lights: green low, yellow middle, red high Auto power off: Yes Flash color: white Sensitivity adjustable: YES Note: The batteries are not included in the package due to Aviation Security Check. Sorry for any inconvenience caused. Package List: 1 x Testing Pen 1 x User manual