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

Manufacturer

Airmar

<h3>Airmar Technology Corporation: Leaders in Marine Sensing</h3><p><strong>Airmar Technology Corporation</strong> has been at the forefront of acoustic and ultrasonic sensing since its founding in 1982 in Milford, New Hampshire. Over more than four decades, the company has grown from a single-product transducer manufacturer into the world&apos;s leading designer and maker of high-performance marine sensing technology — earning a reputation for precision, durability, and innovation across recreational, commercial, scientific, and military applications.</p><p>At the core of Airmar&apos;s identity is a deep expertise in ultrasonic technology. As one of the company&apos;s directors famously put it, Airmar doesn&apos;t build marine electronics — it builds high-end &quot;speakers.&quot; That philosophy has made Airmar the trusted OEM partner behind the transducer technology found inside some of the biggest names in marine electronics. From sport fishing to offshore surveying, Airmar products are engineered to deliver reliable, high-resolution data whether you&apos;re chasing gamefish in shallow freshwater or conducting hydrographic surveys at depth.</p><h3>Marine Transducers for Every Application</h3><p>Airmar&apos;s lineup of marine transducers spans everything from entry-level transom-mount sensors to professional-grade CHIRP thru-hull transducers capable of reading extraordinary depths. Their CHIRP-ready transducers operate across low, medium, high, and high-wide frequency bands, providing anglers and mariners with exceptional target separation, bottom detail, and depth performance. Crucially, Airmar&apos;s &quot;Mix &amp; Match&quot; cable system means a single transducer body can be paired with brand-specific adapter cables — making it easy to upgrade your electronics without swapping out the transducer itself.</p><p>Airmar transducers are engineered to work seamlessly with leading marine electronics platforms. Their <a href="/11479-airmar-raymarine-transducers-accessories-202422">Raymarine-compatible transducers and accessories</a> are a popular choice for Axiom and other Raymarine multifunction display users who want industry-leading sonar performance. Likewise, Airmar&apos;s <a href="/11479-airmar-humminbird-transducers-cables-accessories-202118">Humminbird-compatible transducers, cables, and accessories</a> — including dedicated 9-pin and 14-pin connector variants — integrate directly with Helix, SOLIX, and APEX fish finders for plug-and-play CHIRP capability.</p><h3>WeatherStation Instruments</h3><p>Beyond transducers, Airmar is renowned for its WeatherStation® instruments — all-in-one ultrasonic weather sensors that consolidate multiple measurement capabilities into a single compact, rugged housing. Using proprietary ultrasonic technology with no moving parts, these instruments measure wind speed and direction, temperature, humidity, barometric pressure, and rainfall simultaneously. Because they rely on ultrasound rather than mechanical anemometers, they are immune to bearing wear and unaffected by salt, dirt, and marine fouling — making them exceptionally reliable in harsh environments.</p><p>WeatherStation instruments are deployed worldwide on fixed marine platforms, unmanned surface vehicles (USVs), research vessels, and land-based weather monitoring stations. They are trusted by organizations ranging from recreational boaters to national oceanographic centers.</p><h3>Quality and Warranty</h3><p>Airmar&apos;s commitment to quality is reflected in its manufacturing process — largely hands-on and craftsmanship-driven — and in its warranty program. As of 2025, Airmar extended its standard product warranty to three years across its full lineup, including transducers and sensors. Installers who are Airmar Certified Installers (ACIs) can offer customers an exclusive extended warranty on qualifying transducers, reinforcing the brand&apos;s long-term support philosophy.</p>

Part Number

B117-DT-MM
06/01/2036 1:33 PM
Sale Price

$284.47

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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.

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