Philips Respironics -
This is the small round UI Control Knob (Dial) that sits on top of all PR System One CPAP & BiPAP machines. The knob is used to control the machine's various settings and functions as well as to turn the machine on and off.
Caire SeQual AirSep -
As098-1 (VisionAire 5), AS098-4 (VisionAire 5 with Oxygen Percentage Indicator)
AirSep's VisionAire 5 Oxygen Concentrator is light, quiet and efficient making it an ideal concentrator for full time oxygen therapy users. With nearly silent operation, VisionAire 5 provides up to 5 LPM of continuous flow oxygen 24-hours a day, 365-days a year. VisionAire is compact, easy to use, and virtually maintenance free so it's easy to accommodate in your home. VisionAire is built to last with durable construction, a sophisticated internal motor, and a surprisingly low price.