MD21B; AQD21B Miscellaneous Equipment Alarm Unit: 827941 Parts on group Alarm Unit: 827941: Pos. Part No Qty Parts name Comments 1. 827941 [1] Alarm kit 24V 2. 831627 [1] Thermo monitor 24V 3. 827597 [1] Signalling device 4. 948210 [2] Cable tie (827353) 5. See group 3 Parts catalog : Alarm Unit: 827940 Control Cables Control Mechanism Control for Side Mounting Control for top Installation: B Control for top Installation: A Extra Instrument Panel Coupling Flange 5'': 828390 Coupling Flange 5'': 827957 Coupling Flange 5'': 828145 Coupling Flange 5'': 828147 Propeller Shaft Flange 5'': 828388