Sentinel has made controlling temperature, humidity and CO2 PPM levels easy and affordable. The CHHC-1 combines an accurate digital temperature & humidity sensor with a state of the art NDIR CO2 sensor in one reliable and easy to use controller. By controlling supplemental CO2 with PPM (part-per-million) accuracy, plant growth can be accelerated by as much as 30%.

The CHHC-1 has been designed to maintain a specific CO2 level. You can select “Fuzzy-logic” mode when using compressed CO2 or switch the mode to On / Off when using a gas-fired CO2 generator.

Increasing the CO2 from normal atmospheric level of 375 PPM to between 1250 PPM by using either compressed CO2 or operating a combustible gas CO2 generator has never been easier. The CHHC-1 measures the carbon dioxide level and automatically turns ON and OFF the CO2 device to accurately
keep the CO2 level at the desired level.

The combination remote sensor assembly is also a great feature that allows the user to place the sensor up to 16 ft from the controller. The combo-probe contains a highly accurate temperature, humidity, light and CO2 sensor. The sensors are enclosed in a shielded body and use high-quality shielded wiring to resist electronic noise from electronic ballasts or
other EMI / EFI noise sources.