The IDEAL® 61-647 Single Range Non-Contact Voltage Tester is a robust and reliable tool for detecting the presence of voltage within the range of 50 - 1000V AC. This CAT IV 1000 V AC, UL Listed tester is built to withstand tough conditions. It can endure drops from 6.6 ft (2 m) and boasts IP67 protection against moisture and debris. It uses a non-contact detection system with an antenna enclosed in plastic at the tip, sensing the electromagnetic field around live conductors. When powered on, the tip illuminates with a green LED, switching to a red flashing LED and an audible beep that increases in frequency as the voltage level rises. Powered by two 1.5V AAA batteries, this tester also features a convenient LED flashlight in the tip, an audible disable function for quiet environments, a lanyard tie-off point, auto power off, and low battery indication. This NCVT is your go-tool for ensuring electrical safety with precision and ease.