The Eberspacher 801 controller is being discontinued by Eberspacher so is no longer available for 2026. There is an Ebverspacher 802 controller available - please see weblink
The 802 still has the very useful integrated temperature sensor for room comfort control, same cable connections, looks about identical. It does however no longer support heater error fault code reading if that is important for you.
If your heater is H Kit compatible then you could consider upgrading to Easy Start Select controller see link below. By default this controller does not supportr room temp regulation via it's own temp sensor, it references the temperature sensor built into the heater air inlet. There are some applications therefore that may require installation of an external temp sensor that can nbe suitably mounted in the room/cabin area
