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B122 NMEA 2000 Transducer

Through-hull depth/temperature transducer for NMEA 2000 networks

The NMEA 2000 version of the B122 functions at 235kHz so as not to interfere with fishfinder transducers.


Type NMEA 2000 network transducer
Frequency235 kHz
Beam Width12°
Mounting Through-hull with plastic fairing
Housing Bronze
Hull Aperture2" (51mm)
Usable Shaft Length2.18" (55mm)
Cable Length 10 meters
Mix and Match Χ
Depth Sensor
Temperature Sensor
Speed Sensor Χ
Retractable Insert
Tilted Χ
Status In production
Reference Page View the B122 NMEA 2000 page on the Airmar website


Click an image to display the document in pdf format for viewing or download.

Available Versions

These transducers have a 6 meter drop cable ending in a standard male NMEA 2000 connector. They should be plugged in to a T-connector on an NMEA 2000 backbone.

Cable ConnectorGemeco Part #Airmar Part #EquipmentHousing
B122-235-N244-201-1-01NMEA 2000Bronze

Replacement Parts

PartAirmar Part #Description
02-131-01Bronze Cap Nut
33-409-01High-Performance Fairing
33-414BCBlanking Plug
33-634-02B122 Adapter Ring
B122-HSGB122 Long-Stem Bronze Housing Kit