The Honeywell Home X2S Smart Thermostat is optimized for conventional and heat pump systems (up to 2-heat/2-cool conventional or up to 2-heat/1-cool heat pump). This Energy Star certified Wi-Fi thermostat features flexible scheduling and auto-away functionality. It's a quality thermostat for your home that can be customized to receive change air filter reminders, monitor indoor humidity, and select display settings. You can even coordinate with your home decor thanks to the interchangeable decorative accent pieces (comes with white and gray options). Device works with Google Assistant, Apple Home Kit and Amazon Alexa.. Battery Power Type: Alkaline. Battery Size: AA. Color Family: White. Color/Finish: White/Gray Buttons. Control Type: Manual,Phone Controlled,Pre-set. Features: Backlit Display,Built-in Wi-Fi,Filter Indicator. Heating & Cooling System Type: 2 Stage. Included: Mounting Hardware. Pack Size: 1. Periods per Programmable Day: 4. Power Options: Battery,C-wire. Power Options: Hardwired. Remote Access: No Remote Access. Requires Hub?: No Hub Required. Returnable: 90-Day. Shape: Rectangle. Smart Home: Smart Home Enabled. Smart Home Protocol: Wi-Fi. Smart Technology: Smart Phone/Android App Compatible. Thermostat Compatibility: Furnace. Thermostat Product Type: Smart/Wi-Fi. Thermostat Shape: Rectangular. Thermostat Type: Heating and Cooling. Voice Control Hub Required: Alexa via Proprietary Bridge/Gateway Google Assistant via Proprietary Bridge/Gateway. Voltage (V): 24 V. Voltage Type: Low Voltage. Wire Configuration: C-Wire. Works With: Alexa, Alexa, Google, Google Assistant. Certifications and Listings: Energy Star. Display height (in.): 1.48 in. Display width (in.): 3.27 in. Product Depth (in.): 1.17 in. Product Height (in.): 3.43 in. Thermostat Compatibility: Furnace. Features: Backlit Display. Heating & Cooling System Type: 2 Stage. Features: Built-in Wi-Fi. Wire Configuration: C-Wire. Thermostat Shape: Rectangular. Power Options: Hardwired. Features: Filter Indicator