CO2 PPM monitor, complete w/PPM sensor (for CO2-2, CO2-4 & CGC-1)

Co2 Ppm Monitor, Complete w/Pp

The PPM-1c is an extremely accurate CO2 sensor. It measures the exact level of CO2 in your growing area and displays this value from 0 to 5000 Parts-Per-Million (PPM) on its digital readout.