CCTCASC
This programmable thermostat is ideal for controlling a cooling unit within an audio/video system. The Advanced System Controller automatically turns one low voltage fan on and off based on your chosen temperature set points. You can also control fan speed with Auto, Low, Medium, or High options, and choose how quickly the fans rev up. The Controller even provides constant temperature readouts in Fahrenheit or Celsius to make programming fast and simple.
For more advanced, specialized applications, these units have contact closures that act in conjunction with advanced alarm features, and low voltag