Lev-Lok® Modular switch. The revolutionary Lev-Lok® modular wiring device system consists of a wiring module (locking connector with leads) and a rugged wiring device (receptacle or switch) with solid brass locking connection pins. By placing the wiring module over the devices locking pins and twisting clockwise, the connection is secured. Modular devices address the reliability and performance concerns of specification engineers without sacrificing contractors needs for fast, easy installation. Devices constructed with impact-resistant thermoplastic nylon cover and body. Four corner latches securely fasten the device face to the body. Solid brass locking pins for strong, secure connection between device and wiring module. Wiring module locks and latches to the device. Wiring module ships with protective cover, preventing debris from entering contacts until device is attached. Modules have factory-installed circuit ID label. Electricians can save a step by labelling device locations during rough-in. Switch covers are colour-coded for easy identification of ampere rating.