The Grant Aerona3 Wireless Smart Receiver is a component designed for use with the Grant Aerona3 heat pump systems, which are air-source heat pumps providing energy-efficient heating and hot water for homes or businesses. Key Features:Wireless Control: The receiver allows for wireless communication between the heat pump and a thermostat device. This means users can control their heating and hot water settings without the need for wired connections. Grant Aerona3 Wireless Smart Receiver