Manage your indoor CO2 levels with the Triplett Model GSM500 Carbon Dioxide Monitor/Controller. This versatile device helps to monitor and regulate CO2 values in enclosed spaces, providing different modes for plant and human environments. Connect it to a CO2 generator for greenhouse use, or control a ventilation fan for residential/commercial spaces. The included remote sensor with a 14.8ft (4.5m) cable utilizes NDIR waveguide technology for precise and reliable readings. The unit also offers a dynamic CO2 chart with adjustable time scales and auto Min/Max recall. Customize preset CO2 zone and center values based on your requirements, with built-in day/night auto detection in plant mode for overriding CO2 control. The package includes an AC power cord, mounting screws, and tape for mounting the sensor probe. Backed by a 1-year warranty for peace of mind.