BPL harmony 1 is a auto cpap machine used for the treatment of breathing problems such as obstructive sleep apnea. It comes with an integrated heated humidifier and ramp function for user comfort. The device contains two therapy modes cpap mode and apap mode. Apap mode is an auto-adjusting pressure mode that automatically adjusts pressure during the night on a breath-by-breath basis thereby provides the optimum pressure needed. The ipr feature is designed to make the therapy more comfortable by reducing the treatment pressure.