CO₂ Controller
Wireless CO₂ injection control with proprietary peer-to-peer protocol, quad-level watchdog safety, and distributed sensor deployment.
Audible alarm, SMS, and voice call alerts for threshold breaches. Four independent safety systems protect against dangerous CO₂ accumulation.
Standard 5V USB power — any phone charger works as a replacement.
Why Wireless Over Cables?
Conventional wisdom says cables are more reliable than wireless. In a grow room environment, we've found the opposite to be true.
Cables get kicked. They get accidentally unplugged. They get damaged during routine maintenance. They get chewed by pests. A cable that looked fine yesterday can develop an intermittent connection that causes erratic behaviour for weeks before you find it.
Our proprietary peer-to-peer wireless protocol — built on the ESP-NOW standard specific to our chipsets — eliminates these failure modes entirely. The connection is so stable we use it not because wireless is "good enough," but because we believe it exceeds the reliability of physical cables in real-world deployment.
Cable Failure Modes We've Eliminated
-
✕
Accidental disconnection
Cables kicked loose, pulled during maintenance, vibrated out of sockets
-
✕
Physical damage
Crushed connectors, bent pins, water ingress, UV degradation
-
✕
Pest damage
Rodents, insects — anything that chews plastic or nests in warm spaces
-
✕
Intermittent faults
The worst kind — works sometimes, fails others, impossible to diagnose
Three-Part System
The CO₂ controller is a distributed system: a controller, a smart socket, and one or more wireless sensors. Each component communicates via our proprietary wireless protocol.
The Controller
The brain. Receives sensor data, runs control logic, commands the socket, monitors all safety systems. Includes audible alarm speaker for on-site warnings.
- • ESP32-P4 400MHz dual-core
- • Quad-level watchdog system
- • Built-in speaker for audible alarms
- • WiFi 6 + proprietary wireless
The Smart Socket
Powers your solenoid valve. Runs our firmware and is cryptographically bound to its controller at manufacture — it cannot be repurposed or confused with another system.
- • Irrevocably paired to controller
- • Proprietary wireless protocol
- • Relay rated for solenoid loads
- • Independent watchdog timer
Wireless Sensor Array
Deploy anywhere in the room. Position at canopy height, in problem areas, wherever you need accurate CO₂ data. Multiple sensors supported for averaging or zone monitoring.
- • NDIR CO₂ sensing
- • Temperature & humidity
- • Deploy multiple per room
- • Battery or USB powered
Quad-Level Watchdog System
Application-level monitoring — if control logic stalls, system resets and fails safe
Silicon-level timer — if CPU hangs entirely, hardware forces reset
Socket monitors controller heartbeat — no signal means no injection
Hard ceiling on CO₂ levels — regardless of setpoint, injection stops at safety limit
CO₂ Is Not a Toy
Carbon dioxide is invisible and odourless. At concentrations above 5,000 ppm it causes headaches and dizziness. Above 40,000 ppm it can be fatal within minutes. A regulator failure or stuck solenoid can create dangerous conditions faster than you'd expect.
We've built four independent layers of protection into this system. Each layer operates independently — a failure in one doesn't compromise the others. If any watchdog triggers, the system fails safe: injection stops, alerts fire, and the audible alarm sounds.
The controller includes a built-in speaker for audible alarms. If you're in the room when CO₂ exceeds safe thresholds — whether from equipment failure or any other cause — you'll hear it. This isn't a nice-to-have. It's a necessity.
Alerts That Actually Reach You
Push notifications are easy to ignore. An SMS gets attention. A phone call at 3am gets you out of bed. When your CO₂ system needs attention, you'll know.
Encrypted SMS
Immediate text message when thresholds are breached. Works even when you don't have internet.
Voice Call
For critical alerts, an automated voice call ensures you're actually awake and aware.
Audible Alarm
On-device speaker sounds if you're in the room. You'll hear it over fans, pumps, and everything else.
Hardware & Connectivity
Processing & Wireless
- • ESP32-P4 dual-core 400MHz — processing headroom for real-time control, safety monitoring, and OTA firmware updates
- • WiFi 6 (802.11ax) for cloud connectivity and remote access
- • Proprietary ESP-NOW based protocol for controller↔socket↔sensor communication
- • Bluetooth Low Energy fallback for direct device control
- • Standard 5V USB power — any phone charger works as a replacement
- • Dark room aware — indicator lights automatically dim when sensors detect lights-off, protecting your dark cycle
Access From Anywhere
- • TLS-encrypted connection — monitor and control from any phone, tablet, or computer worldwide
- • Local-first when you're home — on the same network, the device responds directly
- • Encrypted SMS and voice call alerts — enter your phone number, set thresholds, get notified immediately
- • Historical graphs included — 48 hours of real-time data and 7 days of aggregated data, free, no subscription
- • Web app works on any browser. Native Android and iOS apps available.
- • No subscriptions. No monthly fees. One purchase, lifetime access.
Optional Touchscreen
The display model includes a capacitive touchscreen with real-time CO₂ graphs, system status, and direct control. Responsive and smooth — works like a smartphone.
Or skip the screen and use our web interface or mobile app. The headless unit is functionally identical — the display is purely a convenience for on-site interaction.
Wireless sensor and smart socket included with all configurations.
Printed in PLA Bioplastic
The enclosure is 3D printed in Bambu Lab PLA Pure — a five-ingredient bioplastic made from plant starch, with no plasticiser of any kind. No phthalates, and none of the polyethylene glycol or citrate esters that some PLA compounds use. Independent SGS testing of printed samples under EU Regulation 10/2011 measured overall migration in all four food simulants and found none detectable in any of them, including 3% acetic acid held at 70°C.
Those reports cover the material we print in rather than certifying this finished part, and we don't market our enclosures as food-safe — printed parts have layer lines, which is a hygiene question no chemistry can answer.
Why we build from bioplasticReady for proper CO₂ control?
All configurations available with 2 week lead time. Shipping worldwide.