The model number is normally found inside the cooker hood or on the side of the cooker hood casing.
Baumatic Cooker Hood Extractor PCB Board BT6.3BGL BT6.3GL
Baumatic Cooker Hood Extractor PCB Board BTI9170GL-EU BTI9730SS-UK
Baumatic Cooker Hood Control Switch PCB Assembly BT7.1GL 36353
Baumatic Cooker Hood Extractor PCB Board BT9.3GL BTC6510GL
Baumatic Cooker Hood Control Switch PCB Assembly BT10.1GL, BT6.1GL, TON6SS 36353
BAUMATIC Cooker Hood Control Switch PCB Assembly BT10.1GL GHD60BK 082637283
