The EPH smart thermostat is a user-friendly, WiFi-enabled digital RF programmable room thermostat with a receiver and gateway, ideal for controlling up to six heating zones. It offers convenient, precise, and remote control of your central heating system via the EMBER app, including Alexa voice control. This Boiler Plus compliant system is pre-paired and compatible with OpenTherm. It supports voice control, allows for control of multiple zones (up to 6 with additional thermostats), and offers hot water control. It is a cost-effective solution with a 5-year warranty. The package includes the GW03 Gateway, Power Supply/Instructions, RFRP-OT Thermostat, and RF1A-OT Receiver.