Our heat mat thermostat is digital for greater accuracy.
Features

Water-resistant stainless steel temperature probe
Digital temperature control
Provides constant optimum temperatures for specific crops
Controls temperature in colder or warmer environments
LED mode indicator lights; 3-prong grounded plug
Compatible with all Hydrofarm heat mats
Controllable range from 68 to 108 degrees Fahrenheit
Celsius or Fahrenheit read-out (press Up or Down button to change)
Max current: 8.3 amps/1000 watts

Error Codes:
E1: temperature is too low, has exceeded the range limit; or the temperature probe open (break).
E2: temperature is too high, has exceeded the upper limit of the range.
E3: Short-circuit for temperature sensor (probe)