Simrad ST800 S/T Plastic TH For DT800

The Simrad ST800 S/T Plastic TH For DT800 is a passive speed and temperature sensor engineered for anglers and marine professionals who demand real-time water data. This compact transducer upgrade transforms any compatible Simrad display into a dual-parameter instrument, delivering simultaneous speed-through-water and water temperature readings. Whether you're navigating coastal waters, competing in tournaments, or conducting marine surveys, this sensor provides the environmental awareness necessary for informed decision-making on the water.

Constructed with durable plastic housing, the ST800 sensor features a passive design that requires no power connection—drawing signal directly from water movement and thermal properties. The sensor includes a convenient 1-meter pigtail connector (approximately 7 feet) for flexible installation on your vessel's transom or hull. The S/T designation confirms dual sensing capability: the speed channel measures water velocity across the transducer face, while the integrated temperature element continuously monitors ambient water conditions. This architecture ensures reliable performance across freshwater and saltwater environments without active calibration between deployments.

This sensor is specifically designed to upgrade Simrad DT800 systems (model 22098560), expanding their core functionality with speed and temperature data previously unavailable on base packages. Installation is straightforward—connect the pigtail to your DT800 display, mount the plastic housing on your transom, and data begins flowing immediately. The lightweight 2-pound design minimizes drag and mounting complexity. Marine electricians and DIY boat owners appreciate the passive sensor's reliability; there are no batteries to replace, no calibration menus to navigate, and no software updates required for operation. Ideal for fishing boats, cruisers, and commercial survey vessels.