Top 10 CO2 Monitor for Grow Room – Greenhouses

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1. briidea


Briidea Newest CO2 Monitor with Remote CO2 Sensor, CO2 Controller, Programmable Function to Prevent CO2 Waste for Grow Room Greenhouse, Photocell for Day and Night Control

briidea #ad - Automatically turn on/off the load when needed. It can work in extremely wet environment, rust, not easy to corrode, and with long service life. Program mode: featuring 6 standalone programs, the start time of each period can be freely set.

So set different co₂ ppm value for different periods will greatly minimize CO₂ waste. Piggy back plug to avoid messy cords, plug-n-play. Convenient design: lcd screen is easy to view and set. Ndir co2 sensor: 2-channel low drift ndir sensor precisely reads CO₂ ppm levels. In off mode, when no light is detected, detecting only and the load is always turned off. Safe and reliable: allowing a maximum current of 15a and 1800W power. Two modes greenhouse and ventilation mode allowing users to simply plug the CO₂ generator or exhaust fan.

6. 56ft long sensor cable allows proper placement to the grow room. Photo sensor mode enables operation in daylight hours only, it will turn off the CO₂ device. Ul-listed components and waterproof enclosure ensure the stable quality of the whole product's safety. The amount of co₂ required varies from different light intensity in each period of the day.
Brandbriidea #ad
Manufacturerbriidea #ad
Height3 Inches
Length5 Inches
Weight1 Pounds
Width2 Inches

2. Autopilot


Blue, Autopilot APC8200 CO2 w/15' Remote Sensor Monitor & Controller

Autopilot #ad - 2-channel low drift ndir sensor precisely reads CO2 ppm levels. Trend chart records co2 levels per minute, hour, day and week for accurate analysis of CO2 distribution. Adjustable trend chart zoom levels let you trace your ppm levels. Fully customizable ppm deadband and CO2 set point allow flexibility in programming. Remote co2 sensor probe w/photocell & 15' data cable lets you take readings from proper grow room locations.
BrandAutopilot #ad
ManufacturerHydrofarm #ad
Height3.4 Inches
Length7.4 Inches
Weight2.3 Pounds
Width9.6 Inches
Part NumberAPC8200
Warranty3 Year

3. CO2Meter


Grey, CO2Meter RAD-0501 Day Night CO2 Monitor and Controller for Greenhouses

CO2Meter #ad - Piggy back plug allows for control of CO2 generator or tank with electronic regulator. Accurately controls CO2 levels in greenhouses or grow rooms. Easiest co2 controller to use in the industry, Controller automatically adjusts CO2 level according to altitude. Piggy back plug allows for control of CO2 generator or tank with electronic regulator. Built-in light sensor that automatically turns off LEDs lights and CO2 enrichment during dark period.
BrandCO2Meter #ad
ManufacturerCO2Meter #ad
Height5 Inches
Length6.5 Inches
Weight2.05 Pounds
Width2.5 Inches
Part NumberRAD-0501
Warranty1 year

4. Autopilot


Autopilot APCEM2 Desktop Hydroponic Gardening CO2 RH Temperature Monitor and Data Logger for Greenhouse or Grow Room, White/Blue, 2 Pack

Autopilot #ad - Functionality: features multiple hanging options with the hook-and-loop fastener along the back that attaches to an external battery pack battery pack not included; Green power supply is compatible with a standard smartphone charger; Dimensions L x W x D: 4.

7 x 3. 6 x 1. 1 inches; Quantity: 2. Memory: digital memory chart shows and records stats over an adjustable 24-hour or 7-day period; The trend chart shows variable Min/Hr/Day/Wk for readings of CO2/RH/Temperature. Sensor & alarm: 2-channel low drift NDIR gas sensor and audible alarm for low or high CO2 levels.

Operating temperatures: operates in temperatures 32 to 122 degrees F; Operating and storage relative humidity RH: 0-95%, noncondensing. Carbon dioxide meter: autopilot apcem2 desktop co2 monitor and Data Logger Monitors carbon dioxide, relative humidity, and temperature of your grow room or greenhouse on a clear LED screen 2 Pack.
BrandAutopilot #ad
ManufacturerAutopilot #ad
Height0 Inches
Length0 Inches
Weight0 Pounds
Width0 Inches

5. Gain Express


Desktop 3 in 1 Carbon Dioxide/ Relative Humidity/ Temperature Meter, for Home Grow Growing Room Continuous Monitoring Clock with Date & Time, CO2 ppm RH C/ F Indoor Air Quality Monitor

Gain Express #ad - Continuous monitoring- 15-degree tilted angle designed for easier to see and read on desktop; Powered by 5V power adapter Included. Users can change this indicator setting. Alarm can be paused. High accuracy & ndir sensor for co2 detection- non-dispersive infrared technology is used to ensure the reliability and long-term stability.

Audible co2 alarm- audible alarm will beep when the co2 level exceeds the preset value Default setting is >1000ppm. Ideal for long term continuous monitoring. This meter measures 0~9999ppm, while it can maintain a high accuracy at +/- 50ppm in the range of 0~2000ppm, provides reliable readings for daily use. No more guessing or searching on the internet.

This alarm threshold can be adjusted according to user’s needs. Default setting: good= 1000ppm. Air quality level indicator- this co2 meter does not only tell the measurement in digit, its display can also tell if the air quality level is at “gooD”, “NORMAL” or “POOR” Level. Multiple measurements on large & clear display- co2, air quality indicator, temperature, Relative Humidity, Date and Time are displayed on the big LCD display at the same time.
BrandGain Express #ad
ManufacturerGain Express Holdings Ltd #ad
Height5 Inches
Length7 Inches
Weight0.99 Pounds
Width3 Inches
Part NumberC087

6. Inkbird


Inkbird ICC-500T CO2 Controller CO2 Meter Carbon Dioxide Controller for Grow Room and CO2 Generator, with CO2 Sensor for Home Grower CO2 Controller + S01 Sensor

Inkbird #ad - Digital displayboth the measured CO2 and the desired CO2 are ppmdisplayed on the CO2 Controller. Double outletspls plug co₂ regulator or generator into WORK1, exhaust fan into WORK2. Reliablece&fcc certificated. Programmablecontrols the CO2ppm within the desired range and supports calibration and alarms. Plug-n-playthe co2 controller will turn on/off the device when reaches the desired CO2ppm level. S01 sensor is suitable for home growing and HVAC Equipment.
BrandInkbird #ad
ManufacturerInkbird #ad



2 Pack Max Indoor Thermometer Hygrometer Humidity Meter Temperature and Humidity Monitor with Dual Sensors for Bed Room, Greenhouse, Pet Reptile, Humidity Gauge, Basement, Humidor, Plant, Guitar

ANTONKI #ad - Plus, okay or dry. No work well? contact us for full refund! You will be proud to use this great product for years to come! #Note: 1. It is normal when 2 items display difference within ±2℉ & ±5%RH, even they are positioned in the same place. Many fans enjoy this versatile temperature & humidity meter on bed room, too dry or too wet, plants and more.

Here it is! this 2-pack upgraded temperature and humidity gauge with accurate dual probe sensors will be your best choice! Take the guessing game out of air condition forever! Temperature range -58°F~158°F -50°C~70°C and humidity range 10%~99% RH with ±2℉ & ±5%RH accuracy. It comes with separate probe sensor for humidity and temperature, measuring the change per 10 seconds in real time. Easy to use and install. The off/℃/℉ switch gives you more freedom to choose On or Off, wet, Celsius degree or Fahrenheit degree.

The included cr2032 battery is built to long last. Better than analog & chemical thermometer, and 18 ultra-large sensitive vents, this upgraded digital hygrometer thermometer is more accurate and easier to use. If digits are missing, please turn it off, then turn on again; 3. You can get the clear reading in one glance on the large LCD display! As an usa-based reliable brand, wait for 10 seconds, we add a worry-free product service for you. Durable kickstand and dual magnets allow you to position it where they should be.
BrandANTONKI #ad
ManufacturerAntonki USA Co.,Ltd #ad
Height0.7 Inches
Length2.3 Inches
Width1.8 Inches
Part Number#1 Choice Temp & Humidity Gauge - 2 Pack
ModelAntonki indoor-thermometers

8. Govee


Mini Bluetooth Digital Thermometer Humidity Sensor with Data Storage for Home, Cellar, Govee Temperature Humidity Monitor 2-Pack, Indoor Room Thermometer Hygrometer with App Alert, Greenhouse

Govee #ad - What's included: 2 govee thermometer and hygrometer, 2 adhesive, 2 CR2450 batteries included. Enjoy precise data from the hygrometer thermometer every 2 seconds. Not wiFi Version.

Intuitive app control: easily monitor temperature and humidity data on your phone with our Govee Home App within 230ft Bluetooth connecting range. Compact size with large numbers: small, cellar, greenhouse, portable size and large digits make it easy to read and be placed in multiple locations such as your baby room, humidor, and incubator. Smart alert notifications: instantly receive alert notifications to your phone once the temp & humidity levels go out of your preset range. Accuracy: with a built-in swiss-made sensor, the temperature is accurate to ±054°f and humidity is ±3%RH. Intelligent function allows you to adjust the environment in time.
BrandGovee #ad
ManufacturerGovee #ad
Height1.55 Inches
Length2.04 Inches
Width2.04 Inches
Part NumberB5101001

9. Govee


Remote Monitor for Room Greenhouse Incubator Wine Cellar, 2 Years Free Data Storage Export, Smart Humidity Temperature Sensor with App Notification Alert, Govee WiFi Thermometer Hygrometer H5179

Govee #ad - Alert function: set preset temp and humidity ranges, and receive an app alert immediately whenever levels fall out of that range. With stable wifi and bluetooth connection via the Govee Home app, you'll have more opportunities to react to changes in your air quality not support 5G WiFi.

Easy to place: with the lanyard loop, 1 x lanyard loop, you can easily place this indoor temperature gauge anywhere. Package contents 1 x Govee Temp Humidity Gauge, 1 x User Manual. This function helps you react faster to sudden changes in your basement, baby room, etc. Two ways to connect: easily monitor temp and humidity data in real time from anywhere. By refreshing every 2s, you'll stay regularly updated.

Free data storage & export: our room humidity meter uploads data to the App when connected via Bluetooth or WiFi. Only supports Bluetooth settings. Enjoy 20 days of online data storage view and export up to 2 years' worth of data seen through clear historical trends and graphs. Fast & accurate: equipped with a swiss made sensor, this humidity gauge provides precise readings. Temperature is accurate to ±054℉/±0
BrandGovee #ad
ManufacturerGovee #ad
Height0.94 Inches
Length2.83 Inches
Weight0.26 Pounds
Width2.83 Inches
Part NumberH5179001

10. Garden Controls


Garden Controls Grozone CO2 Controller

Garden Controls #ad - Day only Operation. Easy outdoor Calibration. The garden controls co2 controller will control any CO₂ generator or regulator to maintain the grow room CO₂ level around set point value. Set point ranging from 500 to 1500 ppm.
BrandGarden Controls #ad
ManufacturerGrozone #ad