Respironics REMstar Integrated CPAP Heated Humidifer Unique, tubeless design that works with the REMstar family of machines ts simple rubber coupler connection provides secure contact between the water chamber and the CPAP Clear, two-piece water chamber that's easy to fill and is dishwasher safe A lighted humidifier control button on the CPAP unit makes adjusting humidification levels easy Heater plate status light makes it easy to see when the humidifier is on or off The Respironics Integrated Heated Humidifier works with the REMstar Family of CPAP machines, including the REMstar Plus, REMstar Pro 2, and REMstar Auto. It will also integrate with the BiPAP Pro 2, BiPAP AutoSV, BiPAP AVAPS, and BiPAP Plus Never used brand new