The Digital Integrated Sensor Module is an addition to the iGrow 800 environmental controller that allows the controller to operate based off of humidity, light, and CO2 levels, as well as temperature. With the addition of the D.I.S.M. you can fully automate dehumidifiers and lighting systems. You can even utilize automated CO2 injection for plants that will thrive and gain larger yields. Add more options to your automation controller with this integrated sensor.