CO2 Gas Detection Sensor

The PPM-4 is the simplest, safest and most affordable CO2 controller available today... from any manufacturer. Perfect for controlling LP or natural gas generators with PPM accuracy. •The PPM-4 is a two-piece controller that includes a wall mounted infrared sensor with a 10 ft. cord and a plug-in pass-through controller/power supply. •The plug in control is designed to be electrically safe. •Designed specifically to control the carbon dioxide level in your grow environment with PPM accuracy and is easy to use out of the box due to its easy to read 3 LED interface. •Switching set point factory set to 1450 PPM with 50 PPM hysteresis/dead-band. •Calibration couldn't be easier -- simply step outside and press a button. •The PPM-4 is easily mated to any 120 volt valve or CO2 generator with a simple plug in device.