The CHHC-4 Total Environmental Controller has the same button controls, layout and design as its predecessor, the CHHC-1, but we've made some drastic improvements!
The CPPM-4 controls your carbon dioxide levels with part-per-million accuracy. It uses a CO2 sensor that is extremely accurate and features a ten-year life expectancy.
The EVC-2 controls your temperature and humidity with digital accuracy. Photocell allows day/night temperature and humidity settings and also provides daytime CO2 operation.
100% digital lighting and recycling timer that combines 2 main timing functions in one convenient package. Control lighting schedules with 24-hour time clock.