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|Voltbeat technology and continuous self-test so you always know its working|CAT IV 1000 VAC for added protection|Pushbutton switch|Continually tests battery, circuit integrity with a periodic double flash visual indication|Hard plastic, pen shape enclosure|Upon detection, tip glows and beeper sounds produced by ac voltage through insulation without requiring contact-to the bare conductor|Red glow at the tip and a beeping noise (if not switched OFF) indicates the presence of voltage|Blade or round detector tip style|Senses the steady state electrostatic field produced by AC voltage through insulation without requiring contact-to the bare conductor|0% to 95% (0 deg C to 30 deg C), 0% to 75% (30 deg C to 40 deg C), 0% to 45% (40 to 55 deg C), 3000 m operating altitude