Hardware / Buying guideEnvironment controllers and sensors
Check temperature, humidity, VPD, CO2, alarm outputs, and data export.
Before you buy +
What to check
- Check temperature, humidity, VPD, CO2, alarm outputs, and data export.
- Check sensor placement and test an alarm before production.
Terms to confirm
VPD is vapor pressure deficit. Relative humidity compares water vapor with saturation at the measured temperature.
Ask the vendor to confirm each term for your exact setup.
Prices are listed in USD with read dates. Prices and stock change. Tax, shipping, and setup are not included.
Buying tips
Check sensor placement and test an alarm before production.
State notes
No category rule was confirmed from a state page in this research. Ask your state regulator about your license and use.
Under $100
Products appear by maker and model within this price band.
Alarm System Store$40.50
USD · Read 2026-11-14Default Title
INKBIRD US$39.99
USD · Read 2026-11-14US
INKBIRD US$45.99
USD · Read 2026-11-14IHC-200
INKBIRD US$69.99
USD · Read 2026-11-141 Temperature & 1 Humidity Probe / US
INKBIRD US$39.99
USD · Read 2026-11-14Default Title
GrowersHouse$24.90
USD · Read 2026-11-14Default Title
Pulse Grow$69.00
USD · Read 2026-11-14Default Title
$100 to under $300
Products appear by maker and model within this price band.
Hydrobuilder$129.00
USD · Read 2026-11-14Default Title
Hydrobuilder$246.27
USD · Read 2026-11-14Default Title
Hydrobuilder$139.90
USD · Read 2026-11-14Default Title
Hydrobuilder$283.56
USD · Read 2026-11-14Default Title
INKBIRD US$159.99
USD · Read 2026-11-14US
INKBIRD US$130.99
USD · Read 2026-11-14US
INKBIRD US$159.99
USD · Read 2026-11-14Default Title
INKBIRD US$130.99
USD · Read 2026-11-14Default Title
$300 and above
Products appear by maker and model within this price band.
Hydrobuilder$398.00
USD · Read 2026-11-14Default Title
GrowersHouse$441.00
USD · Read 2026-11-14Default Title
GrowersHouse$699.00
USD · Read 2026-11-14Default Title
GrowersHouse$399.00
USD · Read 2026-11-14Default Title
Hydrobuilder$328.00
USD · Read 2026-11-14Default Title
A store listing does not confirm POS support, state approval, or suitability for your business.
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