Titan Controls Atlas 3 – Day/Night CO2 Monitor/Controller

The Titan Controls Atlas 3 is a Day/Night CO2 Monitor/Controller that continuously tracks CO2 concentration from 0 to 2000 parts per million and switches connected CO2 equipment on or off to maintain your target level. Designed for indoor growing environments, it supports both CO2 enrichment and CO2 exhaust modes, handles day and night set points independently, and comes in a durable enclosure that resists dust, rust, and moisture.

Atlas 3 Specifications

Key electrical and physical specifications for the Titan Controls Atlas 3 CO2 Monitor/Controller, sourced from the manufacturer’s product data.

Why Choose the Titan Controls Atlas 3

The Atlas 3 addresses one of the more practical challenges in controlled-environment growing: CO2 levels should not be maintained at the same concentration around the clock. Plants only use CO2 during the light period when photosynthesis is active; running enrichment at night wastes gas and money. The Atlas 3 solves this by providing separate day and night set points so the controller behaves differently when lights are on versus off.

Beyond the day/night logic, the unit covers both sides of CO2 management. If your room runs too low, the enrichment output activates a burner, tank valve, or generator to bring levels up. If CO2 builds above the target — common when rooms are sealed tightly — the exhaust output can trigger ventilation to bring levels back down. Having both modes in a single unit reduces the number of controllers needed in the space.

• 0–2000 PPM monitoring range covers the full span from ambient outdoor air to the upper limits used in high-intensity growing rooms.
• Independent day/night set points prevent unnecessary CO2 delivery during the dark period, reducing operating costs.
• Dual enrichment and exhaust control means one controller manages both CO2 injection and purge ventilation.
• Dust, rust, and moisture resistant enclosure is suited for greenhouse and indoor grow room conditions where humidity and airborne particulates are common.
• Simple setup reduces the time between unboxing and having a working CO2 control loop in place.

Best Uses for the Atlas 3

The Atlas 3 is designed for indoor growing environments where CO2 levels need to be monitored and actively controlled. Below are the situations where this controller fits well.

• Indoor grow tents and rooms with CO2 injection. When running a CO2 burner or tank regulator, the Atlas 3 closes the control loop — it turns the source on when PPM drops and off when the target is reached.
• Sealed or semi-sealed growing rooms. In tightly sealed rooms, CO2 can accumulate beyond the target range. The exhaust mode lets the controller trigger ventilation to bring levels back into range, which is not possible with enrichment-only controllers.
• Setups requiring day/night differentiation. Growers who want zero CO2 delivery during the dark period — or a reduced night-time set point — benefit from the dual set point design rather than workarounds with timers.
• Greenhouses with supplemental CO2. The moisture and dust resistant enclosure makes the Atlas 3 more practical in greenhouse conditions than controllers built for clean office or lab environments.
• Growers pairing CO2 control with environment monitoring. The Atlas 3 works alongside humidity control equipment; consider pairing it with a Boveda 2-way humidity pack solution for humidity management in the same space.

Compatibility & Operating Range

The Atlas 3 operates on 120V / 60Hz power, which is the standard household and commercial circuit voltage in North America. The maximum switching capacity of 5 Amps limits what can be connected directly to the controller’s output.

For CO2 sources that draw more than 5 Amps — such as larger natural gas or propane CO2 generators — the controller’s output should be wired to a relay or a compatible equipment controller rather than directly to the generator. CO2 tank solenoid valves and most small burner ignition circuits typically draw well under 5 Amps and can connect directly.

The exhaust output follows the same 5A maximum and can operate a duct fan, inline fan speed controller, or relay. If your exhaust system draws more than 5 Amps, use the Atlas 3 output to trigger an intermediate relay or a device such as a compatible inline fan rated for the load. The Atlas 3 is not compatible with 240V circuits without an appropriate step-down transformer.

The moisture and dust resistant enclosure means the unit can be mounted in grow rooms and greenhouses without requiring an additional protective housing, though it should not be submerged or exposed to direct water spray.

Sources & Further Reading