Sensitivity Electric Compact Pen AC/DC Voltage Test Pencil 12V/48V-1000V Voltage AC/DC Voltage Test Pencil 12V/48V-1000V Voltage Sensitivity Pen Detector Features: Automatic shutdown When the test pen does not receive any operation within 5 minutes and does not detect the AC voltage, it automatically turns off. Acousto-optic discrimination of Live or Null Wire: - Live Wire Testing: When the sensor end of the measuring pen is close to the object to be measured, the fast-paced buzzing alarm of the tester gives out an alarm sound, and the screen flashes red light, indicating that the test is a LIVE WIRE. - Null Wire testing: When the sensor end is close to the object to be measured, the slow-paced buzzer alarms, and the display screen flashes green light, indicating that the tested line is Null Wire. This product has more comprehensive functions: ✓Large Range Measuring ✓For testing AC Voltage ✓Recognition of Live/Null Wire ✓Triple alarm of sound, light and screen ✓Energy-saving and bright LCD screen ✓High and Low Voltage Signal Indicator ✓Buzzer alarm - loud and sensitive ✓White LED lighting - - energy saving, convenient ✓Auto power off ✓Switch key ✓Good Sensitivity of NCV Sensor Technical Specifications: ►Dual Range of AC Voltage: 48V-1000V/12V-1000V ►Frequency: 50Hz / 60Hz ►Alarm Mode: Sound and light alarm ►Electric Torch: LED illumination ►Low-voltage indicator lamp: Yes ►Power Source: 2 x 1.5V AAA Batteries(not included) ►Security Level: CE CAT. III 1000V / CAT. IV 600V ►Service Temperature: 0-40℃ ►Storage Temperature: -10-50℃ ►Altitude: <2000m ►Safety Compliance: CAT.III 1000V CAT.IV 600V；CE Package Contents: 1 * Lomvum Non-contact Voltage Tester Compact Pen 1 * User Manual