Remote temperature controller, 0°F to 95°F set point, 3°F differential, 1 SPDT, copper bulb, 2 ft. capillary, suitable for line-voltage, low voltage, or millivolt (PowerPile®) control of bulk milk tanks, beverage dispensing machines, ice cube machines, dishwashers, crop drying, tobacco curing, and similar applications. enclosed snap action switches available with SPST or SPDT action. models available that make or break on temperature rise. screwdriver adjustment for temperature setting; external knob option. Immersion well not included.