Price: $74.95
Availability: In Stock - Usually ships in 1 to 2 days.
This unique controller has 2 independent built-in thermostats each with its own power outlet which provides a lot of flexibility controlling temperture in a greenhouse or grow room. No wiring is necessary. Simply plug the device you want to control into the corresponding outlet on the controller, select heating or cooling mode, and set the temperature you want to maintain.

In Heating mode, in can control electric heaters, heating mats, and cables. In Cooling mode, it can automate fans, coolers, and mist cooling systems.


  • -40° to 212°F temperature range
  • 1° to 30°F adjustable temperature differential
  • Both outlets can be independently set to heating or cooling temperature mode
  • Built-in temperature calibration
  • Adjustable high and low audible temperature alarms
  • Operates on 110/120 voltage up to 15 amps (1800W)
  • Includes 5' power cord & (2) 6' remote sensors
  • Settings are saved in the event of a power outage

What is a Differential? The difference between on and off setpoints on a control. For temperature, it is the difference in degrees between the thermostat's on and off setting. If you set a heating thermostat with a 3 degree differential to 71°, it will supply power at any temperature below 71° and cut off at 74° (3 degrees above the setpoint). A cooling thermostat would cut on above 71° and off at 68°.
Overall Customer Rating of 1 Reviews:
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Appears To Be a Good Thermostat

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If you can change your digital clock from Daylight time to Standard then the unit is going to be easy to program. Rigorously tested with the probes in a chamber having both cooling and heating inputs. It appears the "ON" for cooling is the programmed input PLUS the differential. I.E. 75 degree program with a 5 degree differential will not start the cooling cycle until 80 degrees. Cooling is switched "OFF" at the programmed value (75). Repeats very well so knowing how it works enables the user to program it to do what they want. We are using two units to control four stages of cooling in a greenhouse. On our application the outputs from the 608's drive relay coils to thermostatically open and close ridge vent and eave vent motorized windows. More 608's are planned for mist cooling stages.
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