Garmin AIRMAR TM265LM Plastic Transom Mount Transducer with Depth & Temperature

Garmin AIRMAR TM265LM Plastic Transom Mount Transducer with Depth & Temperature

Garmin AIRMAR TM265LM Plastic Transom Mount Transducer with Depth & Temperature are the gold standard for serious anglers and offshore navigators who demand uncompromising detail at depth.

If you are looking to unlock the full potential of your Garmin CHIRP sonar, the Airmar TM265LM is the ultimate transom-mount solution. Whether you are scouting deep-water structures or tracking game fish in the water column, this transducer provides the "eyes" your chartplotter needs to deliver crystal-clear discrimination.

Designed for boats up to 10 metres (33ft) with transom angles between 3° and 21°, the TM265LM combines a low-frequency band for reaching incredible depths with a medium-frequency band for pinpointing targets suspended off the bottom. Built with Airmar’s legendary urethane housing and a robust stainless steel bracket, it is engineered to withstand the rigours of the British coastline.

Garmin AIRMAR TM265LM Plastic Transom Mount Transducer with Depth & Temperature Key Features

• 1kW High-Performance Power: The only 1kW transom mount in its class, providing the "punch" needed to see through the water column with exceptional clarity and detail.
• Dual-Band CHIRP Technology: * Low Frequency (42–65 kHz): Exceptional deep-water performance reaching depths of up to 914m (3,000ft). Perfect for scouting large areas and finding deep-sea structures.
• Medium Frequency (85–135 kHz): The "sweet spot" for identifying fish targets suspended close to the bottom or within the water column.
• Highly Accurate Sensors: Includes a fast-response water temperature sensor, crucial for finding the thermal breaks where fish love to hide.
• Narrow & Precise Beamwidths: With beamwidths ranging from 16° to 25° (Low) and 11° to 16° (Medium), you get a focused view of what is directly beneath your hull rather than "noise" from the sides.
• Superior Build Quality: Housed in Airmar’s SEALCAST™ seamless urethane for long-life durability and paired with a heavy-duty stainless steel transom bracket that suits all propulsion types.
• Airmar Xducer ID® Technology: Features internal circuitry that automatically "introduces" the transducer to your Garmin display, ensuring the sonar settings are optimised the moment you plug it in.

Technical Specification:

• • Mounting: Transom (Plastic)
  • Power: 1,000 Watts
  • Frequency: CHIRP Low & Medium
  • Maximum Depth: 3,000ft (Low) / 1,500ft (Medium)
  • Data: Depth & Temperature
  • Connector: Bare Wire (Requires Garmin 12-pin or 8-pin adapter block depending on your MFD)

Garmin AIRMAR TM265LM Plastic Transom Mount Transducer with Depth & Temperature FAQs

What makes the TM265LM different from other transom-mount transducers?

The TM265LM is a professional-grade, 1 kW high-performance transducer. It is uniquely powerful for a transom-mount model, offering CHIRP-ready dual-band technology. While most transom mounts are designed for shallow water, the TM265LM is engineered for deep-water performance and exceptional target separation.

What depths can I expect to reach with this transducer?

The TM265LM is designed for mid-to-deep water performance:

• • Low Frequency (42-65 kHz): Maximum depth of up to 3,000 ft (914 m).
  • Medium Frequency (85-135 kHz): Maximum depth of up to 1,500 ft (457 m).

Note: Actual depth capability depends on water clarity, salinity, and sea conditions.

What are the benefits of the "Low" and "Medium" frequency bands?

Low Frequency (42-65 kHz): Ideal for deep-water penetration and "scouting" a wide area. It helps you track the bottom at significant depths.

Medium Frequency (85-135 kHz): This is the "sweet spot" for many anglers. It provides excellent detail for targets suspended close to the bottom, around structures, or within the water column, covering popular frequencies like 88 and 107 kHz.

Does this transducer measure water temperature?

Yes. The TM265LM features a fast-response internal water-temperature sensor alongside its depth-sensing capabilities, providing real-time data to your Garmin chartplotter.

Is this transducer compatible with my boat's hull material?

Because it is a transom-mount bracket system, the TM265LM is compatible with all hull materials (Fiberglass, Aluminium, Wood, or Steel). It is typically recommended for vessels up to 10 meters (33 feet) in length.

What is the deadrise angle range for installation?

The included stainless steel bracket is designed to accommodate transom angles between 3° and 21°.

What connector type does this version use?

This specific model (Part Number: 010-11650-20) is typically supplied as a bare wire transducer. This allows for maximum flexibility when connecting to various Garmin sonar modules (like the GSD™ 26) or specific chartplotters, though it may require a wire block or adapter depending on your specific head unit.

Can I use this transducer at high speeds?

Transom mounts are sensitive to turbulence. For the best performance, it is recommended for use at speeds below 30 knots. For the cleanest sonar returns, ensure the transducer is mounted in "clean" water, away from the turbulence caused by the propeller or hull strakes.

Why should I choose the "LM" (Low/Medium) over the "LH" (Low/High) version?

The LM version is preferred by fishermen who want better coverage in the mid-water column and deeper "bridge" frequencies. The Medium band (85-135 kHz) offers a wider beamwidth than the High band, making it easier to find fish in the water column before they pass directly under the boat.