LoRaWAN NDIR CO2 with temperature, humidity, and barometric pressure in one indoor node, so canopy CO2 and VPD ride the same network as your climate map. CO2 reads 400–5000 ppm at ±(50 ppm + 3% of reading), alongside -20 to 65°C, 0–99.9% RH, and 300–1100 hPa. Bluetooth for setup, over two years on a replaceable 4000 mAh battery, and reports to any Growbud LoRaWAN gateway. Pairs with the Controller to hold vents shut while enrichment is on.