New in box-never opened/never used. Convenient control of your home's thermostat is now literally at your fingertips. Easily view or control your thermostat from anywhere with Honeywell's RTH8580WF Wi-Fi Thermostat. Be alerted of temperature swings or make temperature adjustments remotely. You can trust Honeywell's reliable secure network and enjoy maximum comfort by the #1 choice of homeowners and contractors. Wi-Fi enabled thermostat allows for remote access via smartphone or computer. Free smartphone app for iPhone, iPad and Android operating systems. Precise temperature control - thermostat holds +/-1 degree F accuracy to maximize comfort. 7 day programming with 4 program periods per day can be configured to meet almost any scheduling scenario for ultimate flexibility. Pre-programmed with energy savings schedule. Universal compatibility - works with virtually any system type (C-wire required). Intelligent alerts - high/low temperature notifications of unusual temperature sing and loss of connection to Wi-Fi network alert. Filter change indicator. Ability to view local weather from web portal or app. Smart Response Technology - continually learns when to pre-heat/cool your home so you are comfortable at your programmed times. Auto change from heat to cool - automatically determines if your home needs heating or cooling so you are comfortable at your programmed times.