With a limited warranty. The Honeywell RTH6580WF Remote Wi-Fi 7-Day Universal Programmable Thermostat, 4-Pack features and includes the Easily control the Honeywell RTH6580WF from anywhere with the built in Wi-Fi connection to a free app on any smartphone including iPhone and Samsung. The 7-Day programmable thermostat can auto change from heat to cool and has a bright large and easy to read display options. The thermostat is compatible with heating, cooling and heat pump systems. Requires 24V VAC power and does not work with electric baseboard heat (120-240V). Comes included with Honeywell RTH6580WF Remote Wi-Fi 7-Day Universal Programmable Thermostat, 4-Pack