The AS-1 CO2 Alarm Station Kit consists of the DSD-1 Dry Contact Station and the AS-5 Visual-Auditory Alarm. The AS-1 Alarm Kit can be installed inside or outside of grow rooms or facilities. It will sound visible and audible alarms should the CO2 level exceed normal or safe levels.

When combined with the CBA-1, the AS-5 can be connected to the AL-1 or AL-2 CO2 sensor channel, or can be connected to both sensors for complete redundancy.