Hioki 3120 Twin Light Audible Voltage Detector, 600V AC Voltage

The Hioki Voltage Detector 3120 is a pen-style, non-contact detector with a pocket clip and a voltage range of 70 to 600VAC, 50/60 Hz (when touching insulated wiring equivalent to IV2mm²). The red LED and continuous beeping indicate the presence of AC voltage. The green LED indicates battery status. The detector runs on two AAA batteries (included) and meets safety standards for European Union (EN) 61010 Pollution degree 2, Category IV 600V, Underwriters Laboratories (UL) UL1436:1998,
and Canadian Standards Association (CSA) CSA-C22.2 No.160-M1985.

Voltage testers detect electrical current in cables, cords, circuit breakers, switches, wiring, and other components of electrical systems. They can test for live circuits, proper grounding, adequate voltage, and flowing current. They might be used by homeowners to test electrical outlets or by linemen to test power lines. Available in a variety of styles and levels of sophistication, some models simply indicate the presence of electrical current, while others record or display the level of voltage conducted. Some have additional capability such as the ability to perform continuity tests.

Hioki manufactures memory recorders, automatic test equipment, and electronic testing and measurement instruments. The company, founded in 1935, is headquartered in Japan and has a U.S. office in Cranbury, NJ.