AC Voltage Range: about 12-1000V Safety Level: CE CAT.II 1000V / CAT.II 600V ✓Sensitivity adjustment digital display: 1-9 gear digital adjustment ✓High-definition LCD display ✓Zero/Live Line judgment: Sound(sound at different frequencies) and LED lights ✓ NCV sensitvity: Automatically select three kinds of sensitivity (high, medium, and low) ✓NCV sensitivity indication mode: Meters represent high, medium and low sensitivity through alarm sound with different frequencies and LED with different colors. ✓Identification of Live/Null Wire ✓High and Low Voltage Signal Indicator ✓Automatic shutdown ✓Alarm Mode: Sound and Light Alarm ✓Portable Pencil Hook ✓White LED Flashlight - Energy Saving, Convenient ✓Buzzer Alarm - Loud and Sensitive ✓Good Sensitivity of NCV Sensor Specification: Frequency: 50Hz/60Hz Laser: No Battery replaceable: Rotate the battery cover to change battery. Power supply: 2 × 1.5V AAA battery Product size: 129*20*29mm Product weight: About 76g