Wattio THERMIC Smart Thermostat Battery powered connected thermostat for heating (oil, gas and electric) Two-wire connection Thermostat 2 AA batteries and a fastener set included Weekly planner with 15-minute resolution Manual, Automatic and Auto-manual modes Battery powered smart thermostat with weekly Planner with 15-minute resolution You need a Wattio GATE to operate it. It can be controlled from your smartphone wherever you are Will tell you how to save