please make sure that your heater host and the accessories of the heater host are compatible with the motherboard on the link.If it is inconsistent with your original, please do not purchase it will cause an error. My suggestion is to purchase our matching monitors, motherboards, and wiring harness products to make the heater host normal Operation. (Not suitable for Webasto, Most Eberspacher is suitable.) Features: - Remote Control Pairing. - Fuel Filling Manual Mode. - Timing Start Or Stop. - Time Setting. Specification: Condition: New Color: Black+silver Adapted Models: Universal Voltage: 12/24v Display: Lcd Lcd Connector: 3 Pins Remote Control: 4 Button Application: Car/truck Control Board Suitable: 12V / 24V 3KW / 5KW / 8 KW diesel air heater Remote Control To Code Description In The Off Setting State,press The Up Button First And Press The Confirmation Button To Maintain More Than 3 Seconds.to Enter The Remote Control To The Code Interface,display Hfa-,press The Remote Control To Launch The Remote Control Code,after The Code Exit The Code Interface,the Machine Enters The Boot State,if The Code Failed Will Not Enter The Boot State.the Timeout Of The Code Will Automatically Exit The Code State. Beforeplacinganorder,pleasemakesurethatyourheaterhostandtheaccessoriesoftheheaterhostarecompatiblewiththemotherboardonthelink.Mysuggestionistopurchaseourmatchingmonitors,motherboards,andwiringharnessproductstomaketheheaterhostnormalOperation.