Leviton's DHD05-1LW Decora Humidity Sensor and Fan Control with Separate Light Switch replaces an existing combination switch for separate control of exhaust/ventilation fan and lighting. The humidity sensor detects excess humidity in a room and automatically activates an exhaust or ventilation fan helping to reduce condensation and provide a more comfortable environment. The sensor uses state-of-the-art digital sensing technology to continuously monitor and manage moisture levels in areas of the home prone to humidity like bathrooms, basements, laundry rooms and spas. The separate light switch can be pressed to turn on and off lighting, a towel warmer or a heater. Easy DIY install with slim depth for an easier fit in the wallbox and a green flex sleeve that connects to ground or neutral when the sleeve is removed. User-friendly customization to adjust sensitivity, humidity level and time out settings and easy color change using the DHDKT faceplates available in white, ivory, light almond, gray, black and brown. Use with Decora Wallplate and Decora Plus Screwless Wallplate sold separately. Material: Thermoplastic.