Eberspacher 12v/24v Airtronic D2/D4/D4S/D5 Heater 7 Day Digital Easystart Timer
NOTE: Only compatible with later model Airtronic and Hydronic heaters. These are identified by the "H-Kit" logo on the information label/plate on the main heater body. Airtronic D2. Airtronic D4. Airtronic D4S.