Flush-mounted radio receiver for connection to the BRTU 201FU radio thermostat for heating mats. Can be used as an extension when using electric underfloor heating with a connected load of more than 3.5 kW or when there is more than one heating circuit in the room. Flush-mounted installation LED status display of the output Switching contact output 230 VAC Supply voltage 230 VAC Switching current 16 A, cos = 1