Butler Technik - ⭐ Best Seller⭐ Eberspacher Airtronic Heater 801 temperature controller with diagnostic. The Eberspacher 80110003 Modulator temperature controller is an extremely popular and economic choice for your Airtronic heater system.
Eberspächer 801 Modulator controller - Suits all Airtonic models D2 and D4 | eBay
Eberspacher Heater Airtronic D2 Operating Instructions & service manual (New)