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)

This CO2 controller works very well and is accurate. It is easy to use and set and is accurate in its readings and control. The one thing that I would recommend is to have a daylight on/off sensor as plants only utilize CO2 during the daylight hours. I am able to use a timer to act in conjunction with the daylight hours to turn the unit on and off, however it would be more efficient and accurate to just have a light sensor built into it.

Very easy to use and highly configurable. Ready to go out of the box, but the advanced features of this controller are leaps above the competition. The timer is not a simple 7-day timer... it is an advanced configurable repeating cycle timer not found on other controllers in this price range.That said, the instructions are "wordy" and confusing, but complete. No photocell or fuzzy logic and neither are necessary or better. This is a top-notch controller I highly recommend!

works great! saved lots of money switching from autopilot. after reading instructions it is simple to use. follow directions or it gets complicated just pushing buttons.

I got the S01 sensor and have been using it for about a year now. The complaint I would have is how slow the controller reads and updates. It works well and does exactly what it's supposed to. I've realized if you turn your co2 as far down as it will go but still flow (like a just a pube above off) it works just fine. I don't even see any movement from the tiny bead in the regulator but the gas is flowing slowly.The slow flow of gas into your grow allows the controller to catchup. I set mine at 1100ppm and it will turn on about 1050 and turn off at 1100 and fill the grow to about 1600. Takes a while to get back to 1050 and the cycle starts again. Worth the cheaper price and works.

Have had units for several months in preparation for their use…I in fact purchased another one recently to complete my system, but once in use I nearly killed 600+ plants due to mis reading by these units. I fortunately had triple redundancy with multiple additions CO2 monitors, which alerted me to the 2300 ppms of CO2 in my room. After cross checking all the rooms I found that only one of the five actually read close to the other monitors. And yes…I moved things all over the place to confirm. They should refund my money. You can clearly see that I’ve been purchasing new units (different brand of course) on Amazon to replace them. Could use the money to finish buying new Accurate units.

Best controller for this price range even beats out some of the more expensive ones..the fact that it controls the exhaust fan is a HUGE UNDER-RATED BONUS..easy to use features..put it on the same timer as your lights(double socket timer)..put the sensor mid to low on the opposite side of where exhaust is..set it forget..works GREAT. BUY IT.Thank you inkbird.

The instructions don’t make a bit of sense and the how to video on YouTube wasn’t much better. It took 3 or 4 tries to finally get it to work .it’s supposed to only go 10 ppm above or below the set value but it goes way over the “setting “Spend a few extra dollars and get a controller with directions you can comprehend. Wouldn’t recommend it

Super easy to set up and use perfect for any place where controlling CO2 is important.Perfect for mushroom or plant cultivation.I will be using this to control CO2 extraction fans in my mushroom fruiting chamber.