For studies requiring cycling O₂ levels for intermittent hypoxia, Coy offers a factory-installed option to ramp and cycle oxygen levels based on preset protocols in the O₂ control system. In addition, voltage outputs that allow readings of O₂ measurements to transfer to a data logger, chart recorder or computer program are especially helpful when 24-hour documentation is required. The size of the cabinet determines how fast ramping is achieved due to the volume of the cabinet and the maximum flow rates of the controller. Coy recommends the smallest cabinet for maximum flexibility in ramp and cycle.