AIRMAR M135M Medium CHIRP 1 kW In-Hull Transducer

The AIRMAR M135M combines 1 kW Medium CHIRP performance with a focused 16°–11° beam for defined fish targets, structure and bottom detail. Operating across 85–135 kHz, it offers a rated maximum depth of 457 m (1,500 ft), making it a strong option for fishermen working coastal and deeper waters who want an internal transducer installation.

Designed for solid-fiberglass hulls on boats up to 11 m, the M135M mounts inside the vessel without drilling through the hull. Its adjustable plastic base accommodates 0°–22° of deadrise, directing the beam straight down. With no external protrusion, the installation also suits boats that are regularly trailered or lifted.

This M135C-M-MM variant provides depth only and includes an integrated 9 m cable with an AIRMAR 12-pin Mix and Match™ connector. Complete your setup with the Mix and Match™ CHIRP adapter cable for your compatible fishfinder or blackbox sonar module. Explore the adapter options below.

FEATURES

• Medium CHIRP (85–135 kHz): A 50 kHz bandwidth for fish-target separation and defined structure returns.
• 1 kW power rating: Rated maximum depth of 457 m (1,500 ft).
• 16°–11° beamwidth: Focused coverage for identifying fish and bottom features.
• In-hull mounting: No hull penetration or exterior protrusion.
• Adjustable mounting base: Accommodates hull deadrise from 0° to 22°.
• Integrated 9 m cable: AIRMAR 12-pin Mix and Match™ connector.
• Depth-only function: No temperature or speed measurement.

MAIN COMPONENTS & WHAT’S INCLUDED

M135M CHIRP Transducer Body
1 kW medium-frequency transducer with a urethane acoustic window.

Adjustable Plastic Mounting Base
Secures the transducer inside the hull and allows adjustment for the hull’s deadrise.

Integrated 9 m Cable
Supplied with an AIRMAR 12-pin Mix and Match™ connector.

REQUIRED ADAPTER CABLE

Complete the connection with an AIRMAR Mix and Match™ CHIRP adapter cable, also available at the website. Each option listed is 1 m long, with an AIRMAR MMC 12-pin connection at the transducer end. The adapter is not included with the transducer.

Select the adapter for your equipment’s transducer input and confirm that the fishfinder or blackbox sonar module supports the M135M’s 1 kW Medium CHIRP operation.

• Furuno: MMC-10F-HM for 10-pin Medium/High CHIRP inputs; MMC-12F for 12-pin inputs.
• Garmin: MMC-8G for blue 8-pin inputs; MMC-12G for orange 12-pin inputs.
• Lowrance / Simrad: MMC-BL for blue 7-pin single-band inputs; MMC-9N for xSonic 9-pin Medium/High CHIRP inputs.
• Raymarine: MMC-11R-HM for 11-pin Medium/High CHIRP inputs.
• Humminbird: MMC-HB for compatible HELIX systems with a Humminbird #9 connection; MMC-14HB for 14-pin connections without XID; MMC-14HB-X for 14-pin connections with XID.
• Si-Tex / AVMAP–SEIWA: MMC-BB for compatible 8-pin Medium/High CHIRP inputs.

Wired Installations

• MMC-0: Bare-wire adapter for termination at a compatible blackbox sonar module.

Optional Cable Extensions

• MMC-EXT-10: 3 m AIRMAR MMC extension cable.
• MMC-EXT-20: 6 m AIRMAR MMC extension cable.

Extensions provide additional cable length and do not replace the required adapter.

SPECIFICATIONS

• Model: M135C-M-MM
• Power rating: 1 kW
• Frequency: 85–135 kHz (Medium CHIRP)
• Total bandwidth: 50 kHz
• Beamwidth: 16°–11°
• Rated maximum depth: 457 m (1,500 ft)
• Functions: Depth
• Mounting: In-hull with adjustable base
• Housing: Plastic with urethane acoustic window
• Mounting base: Plastic
• Hull material: Solid fiberglass only
• Recommended boat size: Up to 11 m
• Deadrise range: 0°–22°
• Cable length: 9 m, integrated
• Connector: AIRMAR 12-pin Mix and Match™ (MMC)
• Adapter cable: Required, not included

INSTALLATION CONSIDERATIONS

Secure the mounting base inside a solid-fiberglass hull, aligned with the boat’s centreline, and fill it with non-toxic antifreeze. Insert the transducer and adjust it for the hull’s deadrise so the beam points straight down. Follow AIRMAR’s installation instructions.

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BROCHURES  

Mix and Match Transducer Cable System 

Single Band Chirp Transducer Comparison