The pocket-sized voltage detector. The next generation VoltAlert™ AC non-contact voltage testers from Fluke are easy to use – just touch the tip to a terminal strip, outlet, or supply cord. When the tip glows red and the unit beeps, you know there's voltage present. Electricians, maintenance, service, safety personnel, and homeowners can quickly test for energized circuits in the workplace or at home.
- Voltbeat technology and continuous self-test – so you always know it's working 
- CAT IV 1000 V for added protection 
- Nominally, 90 V AC to 1000 V AC or 200 V AC to 1000 V AC depending on model, 45 Hz to 405 Hz; also a 20 V to 90 V control circuit model 
- Be aware of voltage easily - the tip glows red and a beeper sounds when voltage is detected 
- Audible/silent mode for added convenience in quiet environments 
- Operating temperature range -10 °C to 50 °C 
- Operating humidity ranges: 0 % to 95 % (0 °C to 30 °C), 0 % to 75 % (30 °C to 40 °C), 0 % to 45 % (40 °C to 55 °C) 
- Operating altitude: 3000 meters 
- 2 AAA alkaline batteries included