Non-Contact AC Voltage Detector
The Techni-Pro TNP801 is a non-contact AC voltage detector. This easy-to-use device is used to detect an energized circuit - if power is present, the tip will glow and the device will beep.
The TNP801 is IP67-rated for water and dust, features a 1000V CAT IV safety rating, and is small enough to fit in your pocket. It contains a thin tip for easy work with wall outlets and the audio alert can also be turned off for use in quiet environments.