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Airmar B117-DT-MM 50/200 kHz Bronze Thru-Hull Transducer with Mix & Match Cable

Manufacturer

Airmar

<h3>About Airmar Technology Corporation</h3><p><strong>Airmar Technology Corporation</strong> is a globally recognized pioneer in ultrasonic and acoustic sensing solutions, headquartered in Milford, New Hampshire. <a href="/11479-airmar">Airmar</a> has spent more than three decades pushing the boundaries of what ultrasonic technology can accomplish on the water, earning a reputation as the go-to supplier for marine transducers, intelligent weather instruments, and network connectivity hardware across recreational, commercial, scientific, and military sectors.</p><h3>A Legacy Built on Ultrasonic Innovation</h3><p>At its core, Airmar's expertise lies in turning sound waves into actionable data. The company is widely regarded as the primary supplier of ultrasonic transducers to manufacturers of marine electronics for recreational boating, sportfishing, and commercial fishing. From compact sensors suited to personal watercraft to large-scale transducer arrays deployed on oceanographic research vessels, Airmar products are engineered to perform reliably from the surface to full ocean depth. As part of the Amphenol Interconnect and Sensor Systems Division, Airmar continues to expand its reach while retaining its deep roots in marine innovation.</p><p>The brand's <a href="/200641-transducers-accessories-airmar-11479">transducers and accessories</a> represent the heart of its catalog. Airmar's CHIRP-capable transducers deliver broadband sonar coverage, enabling more detailed fish arches, precise depth readings, and superior bottom discrimination compared to traditional single-frequency units. Whether thru-hull, transom-mount, or in-hull, Airmar transducers are trusted by both OEM boat builders and individual boaters upgrading their electronics suites.</p><h3>WeatherStation Instruments &mdash; All-in-One Environmental Intelligence</h3><p>One of Airmar's most distinctive product lines is its WeatherStation family, which falls within its broader <a href="/200363-electronics-parts-accessories-airmar-11479">electronics parts and accessories</a> lineup. These compact, all-in-one instruments consolidate up to seven environmental sensors into a single rugged, UV-stabilized housing with no moving parts to wear out or foul. Using proprietary ultrasonic technology, they measure true and apparent wind speed and direction, temperature, humidity, dew point, wind chill, and barometric pressure &mdash; all from one mountable unit. Models like the 110WX, 220WX, and the newer 300WX series (featuring Bluetooth integration and expanded communication protocols) make them suitable for everything from marina weather monitoring to dynamic platforms aboard unmanned surface vehicles.</p><p>Broad protocol support across the WeatherStation family &mdash; including NMEA 0183, NMEA 2000&reg;, J1939, and CAN-based interfaces &mdash; ensures compatibility with virtually any modern marine electronics network. Airmar extended its standard product warranty from two to three years in 2025, underscoring its confidence in the long-term durability of its instruments.</p><h3>Connectivity: Cables, Adapters, and NMEA 2000 Networking</h3><p>A sensor is only as good as the network it feeds. Airmar addresses this reality with a comprehensive range of connection kits and cable adapters purpose-built for its instruments. Dedicated WeatherStation cables are available in NMEA 0183, NMEA 2000, combined NMEA 0183/2000, and manufacturer-specific configurations, making integration straightforward regardless of the chart plotter or display aboard.</p><p>For boaters building or expanding a full onboard data network, Airmar's NMEA 2000 interface cables and connectors provide a USA-manufactured, fully standards-compliant solution. Featuring zinc-alloy housings and gold-plated pins, these connectors are engineered to resist corrosion, vibration, and signal degradation in demanding marine environments. The product range covers all backbone components &mdash; drop cables, tee connectors, terminators, power tees, and field-attachable connectors &mdash; making Airmar a one-stop source for both sensing hardware and the network infrastructure needed to tie it all together.</p>

Part Number

B117-DT-MM
09/12/2036 7:38 AM
Sale Price

$207.43

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Product Details

The Airmar B117-DT-MM is an entry-level dual-frequency transducer designed for depth and temperature sensing on small to mid-sized vessels. Featuring a single 50/200 kHz ceramic element housed in a low-profile bronze body, this thru-hull transducer extends only 5 mm (3/16") outside the hull for minimal drag and a nearly-flush appearance.

Key Features:

  • Dual-frequency operation: 50 kHz with 45° beamwidth for maximum depth of 366 m (1200'), and 200 kHz with 12° beamwidth for depth to 206 m (700')
  • 600 W power rating for reliable performance
  • Depth sensing with fast-response water-temperature capability
  • Mix & Match cable system allows compatibility with multiple fishfinder brands
  • Right-angle cable exit saves installation space and protects against damage
  • Bronze housing ideal for fiberglass and wood hulls
  • Low-profile design minimizes hydrodynamic drag
  • Included rubber washer accommodates irregular hull surfaces during installation

Technical Specifications:

  • Frequencies: 50/200 kHz dual-frequency
  • Power Rating: 600 W
  • Beam Angles: 45° (50 kHz) / 12° (200 kHz)
  • Maximum Deadrise: Best performance through 7°, accommodates up to 12°
  • Hull Material Compatibility: Fiberglass or wood
  • Mounting Hole Size: 51 mm (2")
  • Housing Material: Bronze with urethane acoustic window
  • Recommended Vessel Size: Up to 8 m (26') LOA
  • Weight: 0.9 kg (2 lbs)

Ideal for leisure yachting and fishing applications, the B117-DT-MM provides reliable depth and temperature data in a compact, durable package. The Mix & Match cable configuration offers flexibility when upgrading or changing fishfinder systems.

Only issue was the tracking it showed for several days that product was in warehouse, in actuality it had been shipped

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