AIRMAR P79S Smart Sensor In-hull


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Product Description and Technical Data

Product information "AIRMAR P79S Smart Sensor In-hull"

The P79S brings depth intelligence to your boat. Featuring Airmars Smart Sensor technology, the P79S delivers processed depth data right to the onboard network for multiple displays to use.

The P79S includes a plastic mounting base which is aligned to the centerline and secured inside the hull. Then it is filled with non-toxic antifreeze. The transducer is inserted into the base and adjusted for the proper deadrise offset, ensuring the beam will be shooting straight down for maximum echo returns. The antifreeze provides the best medium to transmit through solid fiberglass and into the surrounding water. The major benefit of an in-hull transducer is no protruding features on the exterior of the hull, making it the perfect choice for trailered or lifted boats. Designed for smaller boats up to 8 m (25 ft.) with a solid-fiberglass hull.

Airmar Smart Sensors have embedded microelectronics - the transducer element and signal processor are only millimeters apart. The signal from the depth transducer is processed right inside the sensor itself. All that is needed to receive depth data is a single cable into a compatible network or display. Available as an analog sensor or a digital Smart Sensor that can output in the NMEA 0183 or NMEA 2000 format.


  • Depth only
  • 60 W
  • 235 kHz frequency prevents mutual interference with other echosounders on the vessel
  • 7° beamwidth
  • Depth range:

                NMEA 0183 model has maximum depth of 100 m (330 ft.)

                NMEA 2000 model has maximum depth of 150 m (500 ft.)

  • Installed with a hand-adjustable base. No cutting is needed.
  • NMEA 2000 certified cable assembly
  • No holes to drill
  • In-hull installation can be done while the boat is in the water
  • Urethane transducer with adjustable, plastic, mounting base
  • Available in NMEA 0183 or NMEA 2000 standard
  • NMEA 2000 certified or NMEA 0183 cable
  • Installed with a hand-adjustable base. No cutting is needed.


  • Weight: 0.9 kg (2 lb.)
  • Recommended Boat Length: Up to 8 m (25 ft.)
  • Hull Material: Solid fiberglass only
  • Hull Deadrise: 2° to 22°
  • Acoustic Window: Layered plastic urethane (LPU)
  • Data Update Rate: 1 per second
  • Minimum Depth Range: 0.5 m (1.6 ft.)
  • Pressure Rating: 3 m (10 ft.)
  • Pulse Rate: 20,000 p/nm* (5.6 Hz per knot)-*p/nm = pulses per nautical mile
  • Supply Voltage:

                NMEA 0183-10 to 28 VDC

                NMEA 2000-9 to 16 VDC

  • Supply Current:

                NMEA 0183-<40 mA

                NMEA 2000-<200 mA

  • Standard Cable Length:

                NMEA 0183-10 m (33 ft.)

                NMEA 2000 DiviceNet-6 m (20 ft.)

  • Temperature Sensor Accuracy: ±0.5°C (±1.8°F)
  • Temperature Sensor Range: -10° to 40°C (14° to 104°F)
  • NMEA 2000 Load Equivalency Number (LEN): 4
  • CE Regulation: Complies to IERC60945
  • Includes: Adjustable mounting base

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