TrolMaster Carbon-X CO2 Alarm SystemCO2 Alarm System from TrolMaster provides critical monitoring of CO2 levels for up to 13 separate zones rooms. The TrolMaster Carbon X system is designed to protect customers and workers near commercial indoor growing areas that use supplemental CO2, satisfying all local and state regulations. The system has a modular structure, allowing you to customize the system to fit your unique requirements, being able to monitor up to 13 zones. The Carbon X