SPECIFICATIONS :
Size:  3.26"W x 3.26"H x 4.88"L
Weight:  0.91 lbs. 
TSO Compliance:  TSO C41c Class A, DO-160 Env. Cat A1D1/A/SKP/XXXXXX/ZBABA
Humidity:  95% + RH at 50C for 48 hours 
ADF Bearing Input:  DC sine and cosine voltages, +-3.0VDC max across each winding
Power Requirements:  Lighting: 14VDC at 0.16A or 28VDC at 0.08A 
Power Requirements:  Compass Card Drive: 12VDC at 0.12A
Compass Card Input:  (-01) only) 2 phase digital stepper motor signals from KCS-55/55A Compass System