CO2 Alarm Station (Blue light)（AS-4） Lighting potassium and iron and requires

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CO2 Alarm Station (Blue light)（AS-4） Lighting potassium and iron and requiresThe AS 4 CO2 Alarm Station with an Blue light alarm module comes with a Blue light LED display indicator and a LCD digital ppm level reading. It is designed to be mounted outside of the space to be monitored, and will display the CO2 ppm level. The AS 4 can be linked to either the low or the high level CO2 sensors, or it can be linked to both sensors for complete redundancy. The AS 4 will sound an audible alarm and blink the Blue LED indicator in the