Specially designed to coordinate CO2 enrichment with ventilation. Plug exhaust fans into the right side outlets, CO2 into the left side outlets. Set the dials on the CT-DH-3 to the desired temperature and humidity. Now sit back and relax. If the the temperature or humidity gets too high, the CO2 side will turn off and the the fan side will turn on. Once the temperature and humidity fall back to within the proper range, the fans will shut off and the CO2 side will turn back on again. BGH recommends plugging a cycle timer (such as the IGS-11) into the CO2 side of the CT-DH-3 and then plugging your CO2 equipment into the cycle timer. That way, when the power is restored to the CO2, the cycle timer will automatically reset itself, dispense CO2 for the proper length of time, and then shut off until the next release of CO2 is needed. (You can't do this with a regular 24 hour timer because every time the power is cut off from the CO2 side, the time will become incorrect on the timer, and then your CO2 won't dispense properly).
This model is equipped with a built-in photo sensor to defeat the left outlet
(CO2 side) during darkness periods (since plants don't need CO2 when it's dark).
BGH realizes that it can become very confusing when trying to figure out what a product actually does and if it's something you really need. Please feel free to call us and speak to one of our experienced staff members who can help you find the answers you are looking for.
(877) 640-GROW
