Garmin gWind Race Instructions D'utilisation page 4

Specification
Power usage (wind transducer and
GND 10)
Typical current draw at 12 VDC
(wind transducer)
Typical current draw at 12 VDC
(wind transducer and GND 10)
Wind speed range
4
Value
0.85 W
28 mA
71 mA
From 0.8 to 90 knots (From 0.4
to 50 m/s)