Digital CO2 PPM controller, for Regulator & Generator

Daylight-Only CO2 Control from a Remote NDIR Sensor

Supplemental CO2 only does useful work while plants are actively photosynthesizing under light, so running a regulator or generator around the clock wastes gas and can push levels higher than needed after hours. The TrolMaster BETA-8 addresses this with an NDIR CO2 sensor paired to a built-in photocell, so it activates a connected regulator or generator only during daylight hours, holding levels within a 400 to 2000 PPM range you set.

An adjustable deadband, min-max recall, and fuzzy logic response help the BETA-8 control compressed CO2 systems more precisely, and its 16 ft remote sensor cable lets you place the probe close to the canopy where CO2 uptake actually happens.

Key Features & Benefits

• Remote NDIR Sensor on a 16 Ft Cable — reads CO2 at canopy level instead of wherever the controller box sits.
• Built-In Photocell — limits CO2 delivery to daylight hours automatically, when plants can actually use it.
• Adjustable Deadband and Min-Max Recall — plus a fuzzy logic response, sharpen control of compressed CO2 equipment.
• 400-2000 PPM Control Range — with a 10A output relay rated for standard regulator and generator loads.

Who Should Use This Controller

This fits growers running a CO2 regulator or generator who want automatic, daylight-limited dosing tied to a real PPM reading rather than a fixed timer. It suits both single-room home growers and small commercial operations running one CO2 line.

About TrolMaster

The BETA-8 is part of TrolMaster's single-task controller line, engineered from the company's Sacramento, California operation alongside its larger Carbon-X CO2 monitoring system. It targets growers who need one CO2 regulator or generator automated rather than a facility-wide multi-zone setup.

Frequently Asked Questions

When does the BETA-8 turn on supplemental CO2?

Only during daylight hours, as detected by its built-in photocell. It will not add CO2 during the dark period even if the room drops below the low end of your target range.

What is the sensor cable length?

The remote NDIR sensor connects on a 16 ft cable. That length lets you position it close to the plant canopy rather than at the controller itself.

What PPM range can this controller maintain?

It covers 400 to 2000 PPM. An adjustable deadband between 20 and 200 PPM lets you decide how tightly the system holds to your target.

Can the CO2 sensor be recalibrated over time?

Yes, the NDIR sensor can be recalibrated in the field. That keeps it accurate for years of continued use rather than needing full replacement after normal sensor drift.