It is officially stated as a 13 LEN device which means that it could use up to 13 * 50 = 650 mA @ 12 V = 7 W, but it actually only uses 2.5 W, e.g. 4 to 5 LEN. That's OK for a sensor that does all of the following:
- GPS (WAAS, EGNOS) (it even claims to do GLONASS according to its PGN 12029)
- Heading (rate stabilised)
- Pitch & Roll
- Wind direction and speed
- Temperature
- Air pressure
