Very affordable, and simply all you need to regulate CO. This CO controller can accurately monitor room CO levels and turn CO regulators or generators on and off. The monitor is preprogrammed to turn devices on at 1300 ppm and off at 1500 ppm with overshoot already calculated. Instead of a costly digital readout, the HydroGEN CO monitor uses indicator lights to show approximate CO levels. Hydro Innovations uses a high quality, self calibrated, maintenance free SenseAir brand Infrared CO detector. The monitor has a standard 120V piggyback plug and includes an easy mounting wall bracket.