SPAL Fan Single Wire Thermostat Sensor 185 Degree Fahrenheit 3/8 NPT
These thermostat sensors are the same sensor available in SPAL's fan relay packages. These sensor allow you to change the on/off point for the cooling fans. Sensors will turn a fan on at the listed tempature and turn it off 20 degrees lower than the sensor. These sensors require a 3/8" NPT bung.