Lyric is a Wi-Fi connected platform that is designed to simplify home comfort, security and awareness by controlling connected home products with a single app. Control from anywhere by smartphone or tablet. Location based temperature control uses smart phone's location to save energy. Through GEOFence Technology, it senses your return and helps make you comfortable upon arrival. With Smart Alerts, push notifications remind of filter changes and warns of extreme indoor temps. Intelligent Comfort Control considers both humidity and temperature to maintain comfort, so 72 deg (degree) always feels like 72 deg. View and adjust humidity levels in the home. Create custom shortcuts for recurring events. Change settings with one touch. Auto changeover allows the thermostat to automatically select heating or cooling, depending on the indoor temperature. Can control an indoor air quality accessory such as a whole house humidifier, dehumidifier or ventilators. View indoor and outdoor relative humidity levels. View 6 and 12 hour forecasts to check the weather. Custom fan settings circulate more or less air as needed to keep air moving throughout the home. Display options include: degree Celsius or degree Fahrenheit temperature display, 12 or 24 hour clock, battery backup, filter monitor, low battery indicator, vacation mode. Compatible with 24V (volt) heating and air conditioning systems, single stage heating and cooling, multi-stage heating and cooling, heating only, cooling only, furnace (warm air), central air conditioning, heat pump without auxiliary heat, heat pump with auxiliary heat, dual fuel, hot water, steam or gravity, gas fireplace (24V). Not compatible with 750 millivolt, electric baseboard heat (120-240V). Needs C-Wire if using Apple's Home Kit App. Comes with decorative wall plate and mounting hardware. No. RCH9310WF5003/W: Specifications: WiFi Programmable, Batteries: 1-AAA, Width: 3-3/4" w/o Cover, 5-3/4" w/Cover, Height: 3-3/4" w/o Cover, 5-3/4" w/Cover, Depth: 1" w/o Cover, 1-1/4" w/Cover, Color: White, Pkg Qty: 1, Package Type: Box