Honeywell MMI 810.1 mod. 33 Satronic 0620220U, control unit

The burner unit MMI controls and monitors forced-air gas and combination burners with any rated heat input (tested and approved according to EN298).

MMI 810.1 type13,33 and 35 are  also suitable for burners at stationary air heaters, approved according to DIN 4794. Various type and model designations may distinguish the units in terms of programme times and different country standards.
SGN(F) 10, SGN(F) 11-33/2

Datasheet