A little update, and for an additional $50 I think I'll pass. Nothing has changed except the *NEW* things listed
CHHC-4 Total Environmental Controller
The CHHC-4 controls all of your growing area conditions accurately and reliably. First of all, it has all of the C02 control features of the CHHC-1 and CPPM-1. It also has the ability to control 3 other devices, a heating device and a humidity device. Records the min and max temperature, humidity and C02 levels.
Unlike some C02 controllers, the CHHC-4 is able to be calibrated by the user with the self calibration feature.
*NEW* Green LED lights make this unit very plant friendly
*NEW* Removable combination remote temp, humidity, light level & CO2 probe allows the CHHC-4 to be placed up to 16 feet away.
*NEW* Protective caps to help prevent water from getting into the controller
Monitors and controls CO2 with PPM accuracy
Also controls 3 other devices, a heating device. a cooling device and a humidity device.
Separate day/night temp and humidity settings.
Records the min and maxi temp, humidity and CO2 levels.
Has 2 separate outputs to control cooling and heating.
Can increase or decrease the amount of humidity in the growing area.
Remote temp, humidity, CO2 and light level sensor
If it weren't for ideas, we'd still be throwing seeds in the dirt and waiting for rain