The AIR-3DN provides the ability to coordinate supplemental CO2 with
your ventilation equipment. It features separated day and night
temperature settings. The AIR-3DN has a photo cell and CO2 outlet. The
photo cell ensures that your CO2 device (CO2 valve or generator) only
activates when your lights are on. It also has a night heat outlet to
allow you to heat the area at night if necessary to maintain the proper
temperature. To conserve CO2, the CO2 outlets are automatically
disabled while your ventilation equipment is running. The AIR-3DN is
rated for 15 amps @ 120 volts.