The Apogee ST thermistor temperature sensor provides accurate air, water, or media temperature on a 5 m cable. Choose the type for your application.All versions are precision thermistors; they differ in housing and response.Available Options Waterproof sheath probe for air/water/media (ST-100) Air-temperature thermistor for aspirated shields (ST-110-SS) Fine-wire fast-response thermistor (ST-200) Key Features Precision thermistor temperature element 5 m cable with connector Compatible with dataloggers and controllers Made in the USA and backed by Apogee's industry-leading warranty and support. Ideal Applications Air, water, and substrate temperature VPD and climate logging Microclimate and gradient studies