Heating controller complete with valve actuator (AC 220 V). Used with room unit (QAA40.2), outside and flow temperature sensors (QAC31 and QAD21) - No direct replacement. Replacement by the RVP201.0 controller is recommended plus a 
Key data to replacement product: room unit (QAW70). The existing QAC31 and QAD21 can be re-used if preferred. 
Info: The controller must be wall or panel mounted and a 
Key data to replacement product: valve actuator must be provided (depends upon valve type).