Sentinel GPS


Environmental Controller

Comes with:

  • 100% digital temperature
  • Easy to use pushbuttons that are simple to understand
  • Built-in photocell controls CO2.
  • Heavy gauge #14 AWG cables and wire.
  • Super-duty 30-amp relays for long life.
  • Power switch and re-settable 15-amp circuit breaker provides over-current protection.


  • Set separate Day and night temperatures and humidity levels
  • Records minimum and maximum temperature and humidity values so users can troubleshoot problems.
  • Selectable Humidify or Dehumidify.
  • It combines the ability to control temperature, humidity, a CO2 device and a Night device all in one neat package.
  • Simplest to use, easy to own.
  • 3 year warranty.

How to use:

  • The unit comes with a metal bracket that is first attached to a wall. Secure the bracket to the wall with 2 screws. Then use the 2 thumb screws to secure the enclosure to the bracket.
  • The device(s) that will be controlled by the EVC-2 must be 15-amp or less COMBINED load. There are FIVE outlets (receptacles) on the EVC-2 Two of them is used to control the temperature devices like heaters, AC or fans. Another receptacle is to connect your humidity device like a humidifier or dehumidifier. A CO2 receptacle is provided that will activate a CO2 device during the day, with or without coordination with the temperature control device. The 5th receptacles called "Night Device" activates a device like dehumidifiers, exhaust fans etc. that is only to be operated at Nighttime. It has a built-in photocell that senses whether it is Day or Night which is also used to allow the user to set separate Day and Night temperature and humidity levels.
  • The unit requires a 15-amp power supply. The built-in circuit breaker will protect the unit from overloads.

  • For indoor growing, Cooling devices such as ventilation fans or air-conditioners connect to the temperature Device.
  • Dehumidifier or a humidifier can be connected to the humidity Device receptacle.
  • Heaters for cooler climate greenhouses can be connected to the Night Device receptacle
  • Connect your compressed CO2 solenoid / regulator assembly OR a CO2 generator to the CO2 device receptacle.

Power Supply Volts 100 to 265 V~
Circuit breaker rating 15A/240V~
temperature dead-band Adjustable
temperature Mode Heat or Cool
humidity Accuracy +/- 3%rH
humidity Mode Dehumidify or Humidify
CO2 Modes Day w/ or w/o temp, night
Min/Max operating temp 32' to 120' F
Min/Max operating humid 0-99% RH
Remote Sensor Length: 16 ft


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Hydro Depot