The CO₂ LED is available only on the TX T&H CO2 transmitter 600-053.
When the LED management feature is enabled, three indication zones are defined:
Green zone: the CO₂ value is below the low threshold.
In this case, the external CO₂ LED blinks green every 30 seconds.Orange zone: the CO₂ value is between the low and high thresholds.
In this case, the external CO₂ LED blinks orange every 20 seconds.Red zone: the CO₂ value exceeds the high threshold.
In this case, the external CO₂ LED blinks red every 10 seconds.