The C.A.P. CO2 PPM Control or PPM-3 is the most affordable and simple CO2 controller available. Its proven technology is very accurate at measuring levels of carbon dioxide in your growing area from 0 to 5000 ppm (Parts-Per-Million).

Using the PPM-3 is quite simple. Just plug your CO2 device (CO2 valve or generator) into the “piggyback” cord and it will automatically maintain the CO2 level that you specify.

The PPM-3 works with any make of CO2 valve or generator that is 120 volt.

Rated for 1/2 amp. 3 yr. warranty