AC Infinity CO2 Controller, Smart Outlet Carbon Dioxide Monitor, Two-Plug System Best Fit with CO2 Regulators and Inline Exhaust Fans, Adjusts CO2 for Grow Tents, Grow Rooms, Greenhouses

Seems well built, should last. I can't verify how accurate it is, but it does seem to respond quickly if I blow in the direction of the sensor. I am using it to keep CO2 low in a room with a reef aquarium. I hooked up a power supply from this sensor to a Konnected Wifi module that integrates into Samsung Smartthings to control some exhaust fans and a powered valve on a CO2 scrubber. Works well. Before hooking this up, CO2 levels were hitting as high as 1,300. Now its down to about 490. Not super intuitive to set up, but not too hard. Take your time and read the instructions, maybe a few times. All in all, very happy with the product.

Works great! We use it to monitor our mushroom room.

Ca semble etre un très bon produit, sonde précise, construction fiable... mais il est vraiment pas simple a programmer, instruction juste en anglais et affichage pas trop trop clair ! je travaille en instrument / contrôles depuis plus de 30 ans ! bonne chances !

Excellent CO2 controller. Fast & accurate CO2 sensor. Easy to program. Multiple control modes. Well built. Two independently programmed power outlets. *REALLY* wish it had WiFi or Bluetooth for remote control and data logging via AC Infinity App.

This unit is very difficult to use, and I would not recommend it. The instructions are unclear and do not provide enough guidance for setup or operation. Despite spending a significant amount of time trying to get it working, I was unable to successfully set it up. Unfortunately, by the time I realized how difficult it would be to use, the return window had already passed, leaving me stuck with a product that is essentially unusable. Overall, I am very disappointed and would not recommend this unit to others.