title: Where to find Service Data UUIDs?
body: <p>When sending an advertising packet in bluetooth LE, inside the PDU it is possible to add different type of data. Some of them are the service data types, which Data Type Value are:
  0x16 Service Data - 16-bit UUID
  0x20 Service Data - 32-bit UUID
  0x21 Service Data - 128-bit UUID</p>
  
  <p>I have seen some beacons using this type of data. For example one uses the 0x16 followed by 0x6E2A to send temperature.</p>
  
  <p>I have been searching but I cannot find where is the list with the values of all of these Service Data to see the code of each type of metric.</p>