TrolMaster Hydro-X CO2 Sensor - MBS-S8 is a CO2 sensor for CO2 ppm monitoring in the growing area and Hydro-X supplemental CO2 control. Built for Hydro-X only, it adds dedicated CO2 level monitoring so your controller can track indoor CO2 conditions as part of day-to-day climate management. Because CO2 levels can shift quickly in enclosed rooms, this sensor is made to keep readings clear and dependable throughout the day. It measures CO2 ppm within the space, helping you maintain tighter awareness of environmental stability without relying on occasional spot checks. For growers running a supplemental CO2 system, the MBS-S8 gives the Hydro-X platform the CO2 data it needs to manage CO2 output with more confidence. A built-in photocell detecting day/night mode supports automatic day/night behavior, helping keep CO2 control aligned with your room’s light cycle. That makes grow room CO2 monitoring feel more hands-off, while still keeping feedback visible and consistent when conditions change. Setup stays clean and organized with an RJ12 connection designed for simple system wiring. The plug and play design keeps the sensor easy to add to a Hydro-X layout. If you want a purpose-built CO2 sensor that keeps CO2 ppm monitoring straightforward and integrates naturally into Hydro-X only environments, the MBS-S8 is a practical choice for reliable, ongoing CO2 level monitoring in controlled grow spaces. Product benefits: Indoor.