Eberspacher Easy Start select Controller(New 801)for D2/4/5

Eberspacher Easy Start Select for Airtronic and Hydronic Heaters

Additionally, it is compatible with the latest generation S2 D2L heaters. Please note that this controller does not have a built-in temperature sensor. (Click here) If you use an external sensor for your applications instead of the heater’s sensor, you will need to purchase an external sensor and connect it to the grey wire on your heater’s wiring loom.

Important Information
Compatibility: Only works with Airtronic and Hydronic heaters equipped with the latest version control unit, identified by the H-Kit logo on the heater dataplate.
Run Time: Continuous running is achievable only with AIRTRONIC heater models. The Eberspacher EasyStart Select has a maximum run time of 1 hour on HYDRONIC models.