AEMC’s 275HVD noncontact high-voltage tester can be used indoors and outdoors. It offers a self-test function that works through an actual sensing circuit; it does not just turn on a light and buzzer. As the sensor is moved closer to the voltage-carrying conductor, its head picks up the radiated electric field.

Greenlee’s noncontact voltage detector features a dual tip to detect voltage in tamper‑resistant and conventional 15A and 20A 120V outlets. The patented, automatic self‑test verifies circuit integrity, and there is an audible and visual alert when voltage is present. It can be used to detect voltage in outlets, lighting fixtures and more.

Fluke’s 1AC II noncontact voltage tester features a loud beeper that will sound, and the tip will glow red when voltage is detected. The wide voltage detection range allows for use in a broad range of applications. It is rated to CAT IV 1,000V for added protection.

Klein Tools’ ET40 AC/DC voltage tester features LEDs to indicate the type and level of voltage detected. It is designed to withstand a 9.9-ft. drop. It indicates polarity when measuring DC voltages, and it powers off automatically after 2 minutes of nonuse to conserve battery life. The built-in test lead holders are on the sides of tester, and the clip secures the tester to the user’s pocket.