Triadis Engineering Glide Computer and Navigation System Owner's Manual page 38

Serial comms : RS-232 38400 baud, 8N1
Peripheral bus : Dallas Semiconductor 1-Wire bus
Power Supply
Operating Voltage : 12V DC 8
Consumption : 275 mA typical at minimum back light, 500 mA typical at
Battery backup : Li-Ion, up to one hour endurance
Environmental
Temperature range : -30 to +65 degrees C
Shock resistance : not specified
Vibration resistance : not specified
USB host : USB 2.0, Type A
full back light, 250 mA additional when charging backup
battery
Altair has over-voltage protection which disconnects the device
from the power source if the input voltage exceeds 16V. Input volt-
age over 30V will blow the internal fuse. Altair is reverse voltage
protected up to -30V.
Humidity : 10-90% non-condensing
16 V DC
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