NDIR CO2 sensing to 30,000 ppm — built for the Carbon-X safety and control system.
The TrolMaster MBS-K30 is the dedicated CO2 sensor for the Carbon-X multi-zone safety system, using NDIR technology to monitor concentrations from 0 to 30,000 ppm — the full range required for both cultivation-level enrichment monitoring and emergency safety response in licensed commercial facilities.
The MBS-K30 is TrolMaster's current-generation CO2 sensor designed exclusively for integration with the Carbon-X multi-zone CO2 alarm and control system. It uses a non-dispersive infrared (NDIR) sensing element housed in a self-aspirated enclosure — passive airflow draws ambient air across the sensor without requiring a pump, keeping the unit quiet and low-maintenance in a cultivation environment.
The sensor reads CO2 concentrations across the full 0–30,000 ppm range. That upper ceiling matters: standard horticultural CO2 sensors cap out around 2,000–5,000 ppm and are built for enrichment tuning, not safety shutdown. A Carbon-X installation needs a sensor that can accurately report at the high-level thresholds where OSHA and local fire/building codes require automatic shutoff and alarm activation — the MBS-K30 is purpose-built for that duty.
A built-in LCD display shows the current CO2 reading in ppm at all times, giving in-room personnel a direct readout without pulling up an app or controller screen. The cable set in the box — a 16 ft RJ12 cable and a T-shape splitter — is all the wiring hardware needed for a standard single-zone installation.
The MBS-K30 is the sensing node for the Carbon-X CDA-1 controller. Each zone or room monitored by the Carbon-X system supports one or two MBS-K30 sensors. Running two sensors per zone is the configuration most commonly required to satisfy local code — many AHJs (authorities having jurisdiction) and state cannabis regulations require redundant CO2 sensing in occupied enrichment spaces. Check your local fire and building code before specifying sensor count.
The Carbon-X system itself supports up to 13 separate zones and up to 40 total outputs, so a facility scaling from a single flower room to a multi-room campus can add MBS-K30 sensors zone by zone without replacing the controller. The RJ12 plug-and-play connection means installation is straightforward: run the cable from the sensor to the CDA-1 (or a hub in the chain), plug in, and the controller picks up the sensor automatically.
Important: the MBS-K30 requires the TrolMaster SPH-1 supplemental power hub for operation. The SPH-1 is sold separately and must be included in any Carbon-X bill of materials that includes MBS-K30 sensors.
The MBS-K30 feeds live CO2 data to the Carbon-X CDA-1, which evaluates readings against user-configured high-level and low-level alarm thresholds. High-level limits can be set up to 30,000 ppm; low-level alerts trigger as early as 5,000 ppm. Both thresholds are adjustable to match the specific requirements of your local jurisdiction or state cannabis program.
When a threshold is crossed, the Carbon-X system can execute a coordinated response: shut down the facility's main CO2 solenoid valve, activate ventilation fans and dampers, trigger audio-visual alarm stations (AS-1/AS-2), and send a dry-contact signal to the facility's fire alarm panel. The CDA-1 also pushes real-time alerts to the TrolMaster smartphone app, so facility managers receive notifications remotely — not just on-site personnel.
For operators under state-mandated CO2 safety plans or local fire code requirements for supplemental CO2 use, the Carbon-X with MBS-K30 sensors is one of the few commercially available systems designed explicitly to satisfy those compliance frameworks in a licensed cultivation environment.
A typical per-zone bill of materials for a Carbon-X CO2 safety installation includes: the CDA-1 main controller, one or two MBS-K30 sensors per room (per code), the SPH-1 supplemental power hub, an audio-visual alarm station, and any output control modules needed for solenoid shutoff or ventilation control. The MBS-K30 with cable set ships with everything needed to connect the sensor to the system — no additional cabling hardware required for the sensor itself.
The working environment rating for the MBS-K30 is 32–122°F (0–50°C) and relative humidity up to 90% non-condensing, which covers the operating envelope of virtually all licensed cannabis and hemp cultivation spaces. If your facility runs high-humidity propagation or wet rooms, confirm the sensor mounting location stays below the condensation threshold.
HSC supplies the MBS-K30 and the full TrolMaster Carbon-X accessory line to licensed cannabis and hemp operators nationwide. Request a quote to discuss quantities, system configuration, and lead time for your build.
| SKU | MBS-K30 |
| Sensor Technology | NDIR (Non-Dispersive Infrared) |
| CO2 Detection Range | 0 – 30,000 ppm |
| Enclosure Type | Self-aspirated |
| Local Display | Built-in LCD (live ppm readout) |
| Cable Included | 16 ft (approx.) RJ12 cable + T-shape splitter |
| Connection Type | RJ12 plug-and-play |
| Supplemental Power Required | Yes — TrolMaster SPH-1 (sold separately) |
| Working Temperature | 32–122°F (0–50°C) |
| Working Humidity | ≤ 90% RH (non-condensing) |
Each zone or room monitored by the Carbon-X CDA-1 supports one or two MBS-K30 sensors. Running two per zone is the configuration typically required to meet local fire or building code for occupied spaces with supplemental CO2. Verify the sensor count requirement with your AHJ before finalizing your build.
Yes. The MBS-K30 requires the TrolMaster SPH-1 supplemental power hub to operate — it is not powered solely through the RJ12 cable connection to the CDA-1. The SPH-1 is sold separately and must be included in your Carbon-X system order.
Standard grow-room enrichment runs 1,000–1,500 ppm. A safety shutdown system, however, must accurately detect CO2 at the concentrations that trigger emergency responses under fire code and OSHA guidelines — levels that can reach several thousand ppm or higher in an unventilated space with a leak or valve failure. The 30,000 ppm range ensures the sensor remains accurate through the full scale of any credible fault condition, not just normal operating enrichment.
No. The MBS-K30 is designed specifically for the Carbon-X CO2 alarm and safety system (CDA-1 controller). It is not compatible with the Hydro-X or Hydro-X Pro platform. For cultivation-level CO2 monitoring and enrichment control within a Hydro-X build, TrolMaster offers separate sensor modules designed for that system.
The Carbon-X system is designed to meet local and state regulations for supplemental CO2 use in commercial indoor growing facilities, including adjustable high- and low-level alarm thresholds, automatic solenoid shutoff, audio-visual alarms, and fire alarm panel interface. That said, code compliance is jurisdiction-specific — confirm your AHJ's exact requirements and have your licensed MEP engineer review the installation before final commissioning.
Get operator-direct pricing and availability. We supply licensed commercial cultivators nationwide.
Request a Quote