Why a CO2 Alarm Station AS-3 Goes Outside the Door
It is worth being clear about what this device is for, because the framing matters. It is not a cultivation accessory and it does nothing for plant health. It is a warning light and a siren whose job is to stop a person walking into a room that has filled with carbon dioxide. An enrichment room runs somewhere around a thousand to fifteen hundred parts per million, which is harmless. A regulator that sticks open or a bottle that dumps takes a sealed room far past that. So does a burner still running after the fan has tripped. It happens with no smell, no colour and no warning at all. People get a headache and lose judgement before they understand why. That is why the unit mounts on the wall outside the room rather than inside it. Staff read the number and the light before the door opens, not after. Set the threshold against whatever occupational limit applies to your operation rather than against a growing target. Check that figure with whoever signs off on safety in the facility. The amber LED blinks and the alarm sounds together when the threshold is crossed.
Specifying the Rest of the Carbon Dioxide Safety Alarm
This head does not work on its own, and that is the thing to settle before anything is committed. It reads from a Trolmaster CO2 sensor channel, either an AL-1 or an AL-2. It can be linked to one channel or to both at once. Two channels give redundancy, which on a safety device is worth having rather than a nicety. The threshold itself is not set on this unit. It lives on the Carbon-X main controller, so a Carbon-X has to be part of the installation. And the AS-3 requires an SPH-1 for supplemental power. That is a separate part and it is not in this box. Both are easy to miss when a device is described as plug and go. Missing either one is how a customer ends up with equipment they cannot switch on. What does come in the box is the alarm station and a sixteen foot RJ12 cable. Working range is thirty two to one hundred and twenty two degrees Fahrenheit at up to ninety percent humidity, which covers a flower room comfortably. The unit carries a three year warranty. The blue light AS-4 is the same device with a different lens. The colour choice is about what else is already blinking on that wall.
Key Features
- It is a safety device, not a grow accessory: The job is to stop someone entering a room full of carbon dioxide.
- Mounts outside the door: Staff read the number and the light before they open it.
- Amber LED plus audible alarm: Both trigger together when the threshold is crossed.
- LCD parts per million readout: So the actual level is visible, not just an alarm state.
- A Carbon-X controller is required: The threshold is set there, not on this unit.
- An SPH-1 power supply is required: It is not included.
- AL-1 or AL-2 sensor channels: One or both; two channels give redundancy on a safety device.
- Three year warranty: With a sixteen foot RJ12 cable in the box.
Technical Specifications
| Specification | Value |
|---|---|
| SKU | AS-3 |
| Brand | Trolmaster |
| Product | CO2 high level alarm station, amber light |
| Function | Audible and visual alarm plus LCD ppm readout, mounted outside the room |
| LED colour | Amber. The AS-4 is the same device in blue |
| Sensor channels | AL-1 or AL-2; one or both |
| Threshold set on | The Carbon-X main controller, not on this unit |
| Carbon-X controller required | Yes |
| Supplemental power | SPH-1 required; not included |
| Audible alarm | Yes |
| In the box | 1x alarm station, 1x 16 ft RJ12 cable |
| Operating temperature | 32 to 122 F |
| Operating humidity | Up to 90% |
| Package dimensions | 130 x 187 x 88 mm |
| Gross weight | 1.26 lbs, or 0.57 kg |
| Warranty | 3 year |
| Barcode | 6970207971721 |
