【NON-CONTACT AC VOLTAGE TESTER】- The AC-6 non-contact AC voltage detectors is used to detect whether there is AC voltage. The test pen does not need to touch the AC voltage source, just let the tip close to a terminal strip, outlet or supply cord. When the tip glows red and the unit beeps, you know there's voltage present. 【SAFE AND PORTABLE TESTER】- AC-6 portable tester, rated CAT III 1000V, conforms to CE requirements. This voltage tester pen has a test range of 50V to 1000V. The double molded case is strong and durable. The small body and convenient portable pencil hook help you easily put it in your pocket. 【VISIBLE & AUDIBLE ALARM】- AC-6 has sound and light multiple alarm function. Place the tip of the tester near an AC voltage. If the tester detects voltage within the defined detection range, the green LED will turn off, the red LED will turn on, and the beeper will beep rapidly. 【SILENT MODE SWITCH】- Quiet Mode: With the tester off, press and hold the On/Off button until the green LED lights up; with the tester on, press and hold the On/Off button until the green LED flashes. Non-Silent Mode: Press and hold the On/Off button until the green LED flashes and the buzzer beeps. 【MULTI-PURPOSE WIDELY USED】- The circuit tester offers a full range of electric measurements. It also has auto power off and low battery self test functions. Electricians, maintenance, service, safety personnel, and homeowners can quickly test for energized circuits in the workplace or at home. Non-Contact AC Voltage Detectors Features: Operating Range (50Hz/60Hz): 50V to1000V CAT III 1000V Fit in shirt pocket for convenience All outer surfaces are non-conductive for safety Detects AC voltage without metallic contact Beeper sounds Auto Power Off Red LED indicators Green LED indicators Low battery self test