Autopilot Digital Co2 Controller W/15' Remote SensorAutopilot APC8200 CO2 Monitor & Controller with Memory offers a simple and affordable way to control, monitor and record CO2 levels over an adjustable period of time. Trace your room's CO2 levels over minutes, hours, or up to 7 days with this easy to use controller. The APC8200 also boasts a fully customizable CO2 setpoint and deadband. Adjust and review your CO2 levels when you want to and how you want to. The APC8200's memory feature gives growers a