Amazon.com: New 6V AC Adapter for Microlife DSA-6E-05 US 060060 P/N: AD-1024A Power Supply : Electronics
Amazon.com: Tube Type Acylic Flowmeter, Air Flowmeter Oxygen Flowmeter,LZQ-5 Flowmeter 2.5-25 LPM Flow Meter with Control Valve for Oxygen/Air/Gas : Industrial & Scientific