Urethane fairings with a convenient cutting guide are available for these models. The fairings will not swell or rot and they allow a user to easily install a transducer. One model is available in stainless steel. Some housing models are available with temperature sensor. These units are available in low profile and flush mount housing styles.
Housings are available in plastic, bronze, and stainless steel versions.
Older Airmar speed and temperature units are easily upgraded to the ST650 with a retrofit kit.