CO2 Alarm Station plus LED display indicator with cable set

Color-Coded CO2 Status Alarm With Digital PPM Readout

A CO2 alarm that only flashes once levels are already dangerous doesn't tell a grower anything about normal supplemental CO2 use versus an actual problem. The AS-2 alarm station solves that with a three-color status system: an audible-visual module with a color-coded LED indicator and an LCD digital ppm display, designed to mount outside the grow room for an at-a-glance read before anyone walks in.

Green shows CO2 below 800 ppm and a safe room to enter, yellow shows CO2 at or above 800 ppm with supplemental CO2 in use, and the unit sounds an audible alarm and blinks red whenever CO2 rises above the level set in the Carbon-X main controller.

Key Features & Benefits

• Color-Coded LED Display — green, yellow, and red status modes.
• LCD Digital PPM Display — shows the current CO2 reading alongside the color status.
• Dual-Sensor Compatibility — reads from AL-1, AL-2, or both together for redundancy.
• Plug-and-Go Setup — mounts outside the grow room or facility with a 16 ft RJ12 cable.

Who Should Use the AS-2 Alarm Station

Carbon-X system owners who want an at-a-glance, color-coded readout of current CO2 safety status, rather than a single-color alert, will find the AS-2 suited to that need.

About TrolMaster

TrolMaster's Carbon-X CO2 monitoring line adds status-differentiated alarm stations like the AS-2 alongside its single-color AS-3 and AS-4 models, giving growers a choice between a three-state readout and a simpler single-color indicator.

Frequently Asked Questions

What does the green indicator mean?

CO2 is below 800 ppm and the room is safe to enter. That threshold is fixed at 800 ppm regardless of the Carbon-X controller's alarm set point.

What does the yellow indicator mean?

CO2 is at or above 800 ppm and supplemental CO2 is in use, which is a normal operating state rather than an alarm condition. The unit only sounds an audible alarm once CO2 exceeds the level set in the Carbon-X controller.

What does the red indicator mean?

CO2 has exceeded the level set in the Carbon-X controller, triggering both the audible alarm and a blinking red LED. That's the only state that sounds an alert.

Does this unit require additional power hardware?

Yes, the SPH-1 for supplemental power, sold separately. Without it, the AS-2 doesn't have the power it needs to operate the LED display and alarm together.