LED AC Electric Voltage Power Detector Sensor Tester Non-Contact Pen 12-1000V Product Description 【Non-contact AC Voltage Tester】: This test pen has NCV sensor, you can detect the presence of AC voltage by simply pressing the power switch and bring the probe of the test pen close to the power socket or live line. 【Alarm function】: When the AC voltage is detected, the sensor indicator lamp of the tester blinks. The test pen lights up the corresponding signal strength indicator depending on the detected signal strength. Two red lights, two green lights and one green light respectively indicate high, medium and low signal strength, and the buzzer sounds different alarms. 【Adjustable Measurement Range】: The HANMATEK non-contact AC tester can adjust the gear in 9 steps, and the detection range can be freely switched between 12-1000v and 90-1000v. 【With Lighting Function】: With an LED flashlight function that is convenient for use in the dark, it can also be used as an emergency light in an emergency. 【Auto Power off Function】: If there is no operation within 3 minutes and the test pen does not detect the AC voltage, the test pen will shut down automatically.    Specification： AC Voltage: 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  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 600VCE   Package Included: 1 x Voltage Tester (Batteries included) 1 x User Manual