Titan Controls Atlas 1 - CO2 Monitor/Controller with Remote SensorThe Titan Controls Atlas 1 CO2 Controller with Remote Sensor is one of the best ways to provide the perfect amount of carbon dioxide to your indoor plants. IT comes with a 25 foot remote sensor and can be adjustable to multiple set points and elevation levels. With more features like a built in self calibration function, integrated photocell, and much more, this is one of the best monitor and controller combos on the market. Increase Yields With The