Integral 6’ lead wire which installs in a ½” hole for easy installation. The rugged polycarbonate construction for safety is UV outdoor rated so you can mount it anywhere. The ChekVolt interface, installed on an electrical panel, allows maintenance people to use any noncontact voltage detector pen to check line voltage before and after they open the main disconnect. The standard yellow name labels (as seen on back) help remind personnel to pre-verify every voltage point before accessing the panel interior. The ChekVolt® simply extends the line voltage from the main disconnect (or other voltage source) through a wire into an encapsulated non-metallic assembly fastened to the enclosure exterior. The ChekVolt is sold with three interface points and one three-point label.