CO2 Controller Carbon Dioxide Controller Air Quality Monitor CO2 Meter with Day and Night Control Relay Function, NDIR Sensor Probe Cable, CO2 Detector for Plant, Grow Room, Green House, Garden, Home

very nice easy to use

Great co2 monitor/controller, made well and very happy with my purchase

Love it should have bought it a long time ago. Very easy to install works great. Makes it so much easier to monitor. I don't have to check on it all the time.

I haven't really had an opportunity to use this yet beyond turning it on and looking at the features. For the features that the controller has compared to others on the market for similar pricing it appears to be a better controller because of the remote sensor. Time will tell. After I use it for awhile I will return and update my review as to its performance ease of use, reliability, etc.. I'm looking forward to having this tool in my employ.

Easy to set and adjust as needed. Very happy with operation. Well designed and solidly constructed. Good choice for me!

Exactly what was needed for the intended application.

This unit is sold for use with plants, but that is useless because you can only add fresh air by the single outlet. You can't add CO2 via a second outlet when the CO2 falls below the deviation you set and becomes too low. Unfortunately, I waited too long to return, but useless in a grow room.Does what it should once you know how to navigate the menus, but only for human monitor and control.Improvement: the English use of Zone is really confusing here, because in the US when we refer to Zones we are typically talking about physical zones when it comes to heating/cooling. Houses can have several independent Zones, like kitchen as one zone and bedroom as another. I think you should change it to "Deviation" or "+/- Tolerance". The latter would mean as is shown graphically in your excellent video that Zone is tolerance of the center value, so if you set the center - really "nominal" - value to 1200 and the Zone to 400 then the tolerance is +200 / -200.Alternatively, you could have three settings: center, high, low so that the operator could choose to allow the deviation to be +300 / - 200 since the device doesn't offer values like 1275.Note: All values are in 50 ppm increments.

This was really intimidating for me to try. But this machine was pretty straight and it made it super easy. Its so cool. It's actually super easy to use.