Philips Respironics System One Control Knob

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Comes standard with most Respironics 50 and 60 Series System One CPAP & BiPAP machines. This replacement Control Knob comes standard with the following Respironics 60 Series System One CPAP & BiPAP machines: REMstar Plus 260 REMstar Pro 460 REMstar Auto 560 BiPAP Pro 660 BiPAP Auto 760 It can also be used to replace the lighter gray Control Knob found on the following Respironics 50 Series System One CPAP & BiPAP machines: REMstar Plus 250 REMstar Pro 450 REMstar Auto 550 BiPAP Pro 650 BiPAP Auto 750 Show more