Temp, Humid & CO2 controllers COOL-1 UTC-1 EVC-1 EVC-2 CPPM-1 CHHC-1  
  Cooling control Selectable Selectable Yes Selectable   Yes  
  Heating control Selectable Selectable   Selectable   Yes  
  Humidity control     Selectable Selectable   Selectable  
  Digital display   Yes   Yes Yes Yes  
  Easy to use pushbuttons   Yes   Yes Yes Yes  
  Separate Day and Night settings   Yes   Yes Yes Yes  
  Records minimum and maximum temperatures   Yes   Yes   Yes  
  Records minimum and maximum humidity levels       Yes   Yes  
  Records minimum and maximum CO2 PPM levels         Yes Yes  
  CO2 Part-per-million (PPM) sensor & control         Yes Yes  
  Fuzzy logic or On / Off CO2 PPM control         Yes Yes  
  Remote sensors   Yes   Yes Yes Yes  
  3-year warranty Yes Yes Yes Yes Yes Yes  
  Inexpensive "analog" unit Yes   Yes        
                 
* Some of Sentinel's controllers have the abillity to "select" certain functions so that the unit can be better customized for each user.                               * While most of Sentinel's controllers are DIGITAL, some of our controllers are based on familiar "analog" controls that have adjustments that are set using a simple turn of a dial.