C.A.P. PPM-3 Monitor/Controller Refurbished
C.A.P. is no longer in business, we recommend going with an alternative, comparable replacement controller such as the Titan Controls Atlas 1 - CO2 Monitor/Controller and Titan Controls Atlas 3 -- CO2 Monitor and Controller. This refurbished model comes with the same 5 year warranty you get with the new unit. This product can be reterned through either C.A.P. or Growers House.The PPM-3 from C.A.P. 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. If you're confused or have questions about CO2, check out our CO2 buyers guide. Want to know know long your tank will last in your growing space? Using a co2 calculator will help you use your CO2 efficiently. Instructions