ProBP 2400 Digital Blood Pressure DeviceSerial Number ranges:(21)07150001 – (21)07150620 (21)12150001 – (21)12150500 Please note: (21) is NOT part of the Serial Number. It is the Global Unique Device Identification (GUDI) Application Identifier that precedes the Serial Number on any GUDI compliant label.ARTG Number: 232592