The REMstar Heated Humidifier System, was designed to create a fully integrated unit that didn`t sacrifice the aesthetics and operability of the individual CPAP systems. All REMstar units operate with the same easy-to-use Heated Humidification System. The lighted controls are right on the CPAP, so they`re always easy to find. And since the platform plugs into the CPAP, there`s only one plug to go into the wall. What`s more, the transparent water chamber is easy to fill, clean and care for.