The "LH" suffix identifies this as the low/high dual-frequency version of the TM265 family, giving CHIRP sonar performance across two frequency bands from one transducer rather than needing separate high- and low-frequency units. At 1kW this transducer has enough transmit power for genuinely deep-water use (well beyond typical inshore/lake depths), making it suited to serious offshore or deep-lake anglers running a compatible Garmin sonar module rather than casual, shallow-water use where a lower-powered transducer would be adequate. Its 12-pin connector confirms plug-and-play compatibility with Garmin's own sonar-equipped chartplotters and sonar modules without needing a separate adapter cable. Airmar builds the TM265 series with a corrosion-resistant bronze-look composite housing suited to fibreglass hulls, and the family is widely used across multiple sonar brands beyond Garmin's own rebadged version sold here.