TrolMaster MBS-PRO 4-in-1 Temperature, Humidity, CO₂ & Day/Night Sensor

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Regular price $599.99
Regular price $599.99 Sale price $608.29
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The TrolMaster MBS-PRO 4-in-1 Sensor combines air temperature, relative humidity, CO₂ (PPM) monitoring and Day/Night detection in a single professional environmental sensor.

Designed for the Hydro-X Pro HCS-2 and Hydro-X Plus HCS-3 systems, the MBS-PRO continuously monitors environmental conditions and sends real-time data to the controller. The controller can then automatically operate connected temperature, humidity and CO₂ control equipment according to programmed settings.

A built-in photocell detects whether grow lights are on or off, allowing the controller to automatically determine Day or Night operation. The photocell detects only the presence of light and does not measure light intensity, PAR or PPFD.

The integrated LCD screen displays current environmental readings directly at the sensor for convenient onsite monitoring.

Multiple MBS-PRO sensors can be installed throughout larger grow areas, allowing environmental conditions to be monitored at several locations. With compatible systems, sensor readings can be averaged or assigned to specific control devices for more precise environmental management.

The MBS-PRO features a water-resistant enclosure and TrolMaster's push-lock connection system for fast, secure installation.

Important: The MBS-PRO requires the TrolMaster SPH-1 Sensor Power Hub for supplemental power.


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Product overview

The TrolMaster MBS-PRO is a professional 4-in-1 environmental sensor that monitors temperature, humidity, CO₂ (PPM) and Day/Night status. Designed for Hydro-X Pro and Hydro-X Plus controllers, it features an integrated LCD display, push-lock connection and multi-sensor monitoring capability.

Key Features
  • 4-in-1 temperature, humidity, CO₂ and Day/Night sensor
  • Real-time environmental monitoring
  • Built-in CO₂ PPM sensor
  • Integrated photocell for Day/Night detection
  • Photocell detects light presence only — not PAR or PPFD
  • Built-in LCD display for onsite monitoring
  • Push-lock connection system
  • Water-resistant sensor enclosure
  • Supports multi-sensor environmental monitoring
  • Sensor readings can be averaged on compatible systems
  • Sensors can be assigned to specific control devices
  • Designed for Hydro-X Pro and Hydro-X Plus
  • Requires SPH-1 for supplemental power
Technical specifications

Model: MBS-PRO
Sensor Type: Temperature / Humidity / CO₂ / Photocell
Temperature Monitoring: Yes
Humidity Monitoring: Yes
CO₂ Monitoring: Yes
Day/Night Detection: Yes
PAR / PPFD Measurement: No
Display: Built-in LCD
Connection: Push-lock
Input Voltage: 0–11.5 V
Maximum Current: 0.2 A
Operating Temperature: 32–122°F
Operating Humidity: Up to 90% RH
Enclosure: Water-resistant plastic enclosure
Package Dimensions: 275 × 164 × 62 mm
Supplemental Power: SPH-1 required

Manuals and downloads
Frequently asked questions

What does the TrolMaster MBS-PRO measure?

The MBS-PRO measures air temperature, relative humidity and CO₂ concentration in PPM. It also includes a photocell that detects whether the grow environment is operating in Day or Night mode.

Does the MBS-PRO measure PAR or PPFD?

No. The built-in photocell only detects whether light is present or absent. It does not measure light intensity, PAR or PPFD. A compatible MBS-PAR quantum sensor is required for PPFD monitoring.

Which controllers are compatible with the MBS-PRO?

The MBS-PRO is designed for the Hydro-X Pro HCS-2 and Hydro-X Plus HCS-3 environmental control systems.

Can multiple MBS-PRO sensors be used in one grow room?

Yes. Multiple MBS-PRO sensors can be positioned throughout a grow area. The Hydro-X Pro supports up to 50 sensors in combination, while the Hydro-X Plus supports up to 6 MBS-PRO sensors.

Does the MBS-PRO require additional power?

Yes. TrolMaster specifies that the MBS-PRO requires the SPH-1 Sensor Power Hub for supplemental power.