GROZONE CO2R CO2 CONTROLLER 2 OUTPUTS 0-5000 PPMThis user friendly CO controller accurately activates and shuts off CO generators to maintain your desired LOW and HIGH CO levels in the grow room. The controller can deactivate CO enrichment during the night cycle and also perform CO evacuation. The built in CO sensor is housed within the controller box, and an additional Output Box (AUX Output) can be connected to control your exhaust fan. The fan will stop when the CO generator is activated,
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