【DUAL RANGE CIRCUIT TESTER】- The AC-15EX voltage test pen has dual ranges, you can adjust the sensitivity according to your needs (low voltage range mode 12 ~1000VAC and high voltage range mode 100 ~1000VAC). The sensitivity is adjustable to make the measurement more flexible and accurate. 【NON-CONTACT VOLTAGE TESTER】- AC-15EX non-contact AC voltage detector with NCV induction probe for AC voltage can realize the test without physical contact. Simply place the tip near a terminal strip, outlet or power cord. Insulated operation ensures test safety. 【BUZZER ALARM & LED FLASHLIGHT】- AC-15EX has sound and light multiple alarm function. When low voltage is detected, the green light is off and the yellow light is on. When detecting high voltage, the green light is off, the red light is on, and the buzzer will sound an alarm. LED flashlight can help you work better in the dark. 【SAFE AND PORTABLE TESTER】- AC-15EX portable tester, rated CAT III 1000V CAT IV 600V, conforms to CE requirements. IP67 waterproof and dustproof, 2 meters drop-proof, durable. The small body and convenient portable pencil hook help you carry it easily in your pocket. 【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. The Non-contact AC Voltage Testers are easy to use — just let the tip close to a terminal strip, outlet, or supply cord. Two modes, green means high voltage mode, yellow means low voltage mode. When the tip glows red and the unit beeps, you know there’s voltage present. Green LED means power on, flashing red LED with beeper means voltage detected. Flash and Beep rate increase as the detector gets closer to the voltage source helping the user pinpoint live circuits. Electricians, maintenance, service, safety personnel, and homeowners can quickly test for energized circuits in the workplace or at home. Features: Forward facing flashlight High power rear flashlight Pocket clip for easy storage ATEX certificate for AC-15Ex Power ON/OFF with & Silent Mode Low battery self test & Auto power off Thinner probe tip for working with wall outlets CAT IV 1000V, IP67 Waterproof & 2 m drop-proof