Lev-Lok® Devices constructed with impact-resistant thermoplastic nylon cover and body. Four corner latches securely fasten the device's 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 labeling device locations during rough-in. Switch covers are colour-coded for easy identification of ampere rating. Backed by a limited 10-year warranty.