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AutoVent’s greenhouse ventilation systems automate vent and curtain control based on real-time temperature and humidity, reducing rot, mildew, and manual adjustment. Our Captain controller line reads conditions through a weather station and adjusts your vents automatically, so your crops stay in range without someone checking on them all day.

This category includes our full lineup for greenhouse setups: Captain 10 and Captain 8E controllers, manual power-supply controls like the CMC-100-GH and CMC-200-GH, plus the sensors, gateways, and cabling needed to get a system running.

Not sure which controller fits your greenhouse? Contact us or check our Find Your Controller tool to match a system to your setup.

Frequently Asked Questions
What does a greenhouse ventilation controller actually do?
It reads temperature and humidity from a weather station and automatically opens or closes vents to keep your greenhouse in range, instead of requiring someone to adjust vents manually throughout the day.
What’s the difference between the Captain 10 and Captain 8E controllers?
Both automate vent control based on weather station input, but they differ in configuration and capacity. Check our Find Your Controller tool or contact us to confirm which matches your greenhouse’s setup.
Do I need a separate humidity sensor for my greenhouse system?
It depends on your controller. Some AutoVent systems use a dedicated humidity sensor alongside the main controller; others have it built in. Contact us to confirm what your specific model requires.