The ability to read up to 30,000 ppm CO2 is critical to the proper operation and safety of an emergency CO2 system like the Carbon-X. The MBS-K30 is Trolmaster’s newest CO2 sensor, which incorporates a NDIR 0-30,000 ppm sensor in a self-aspirated enclosure. The MBS-K30 also features a built-in LCD display that will constantly display the current CO2 level (ppm). Each of the zones / rooms monitored by the Carbon-X can have 1 or 2 MBS-K30 CO2 sensors installed in order to satisfy local code requirements.