Select your product to confirm this information applies to you
Devices Powered by NMEA 2000
Garmin primarily uses the NMEA 2000 network to share data between devices and accessories. The majority of these Garmin products will still need to be powered using a directly connected power cable that is connected to the power source of the boat.
There are a few exceptions in which the NMEA 2000 network does supply power to the device or accessory:
Intelliducers (NMEA 2000 versions)
GBT 10
GDL 40*
GET 10
GFL 10
GHC 10
GHC 20
- GHC 50
GMI 10 (if the serial number starts with 1Y3)
GMI 20
GND 10
GNT 10
GNX 120
GNX 130
GNX 20
GNX 21
GRA 10
GPS 17x NMEA 2000
GPS 19x NMEA 2000
GST 10
GWS 10
GXM 51
GXM 52
Marine Heading Sensor
Smart Transducers (NMEA 2000 versions)
*As of January 1, 2017 weather services were fully disconnected and are no longer available for the GDL 40.