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AS-2
The AS-2 CO2 Alarm Station combines an audio-visual alarm module with a color-coded LED display indicator and an LCD digital readout of the ppm level. It is designed to be mounted outside the space to be monitored and will display the CO2 ppm level. The AS-2 can be connected to either low-level CO2 sensors or high-level sensors, or it can be connected to both sensors for complete redundancy.
The green LED indicator shows that the CO2 level is below 800 ppm, which means the room is safe to enter. The yellow LED indicator shows a CO2 level equal to or greater than 800 ppm, which means additional CO2 is being used. The AS-2 will sound an audible alarm and a flashing red LED indicator if normal or safe CO2 levels are exceeded.