A&D ULTRACONNECT UB-1100BLE Instruction Manual page 11

SYMBOLS
Symbols printed on the device case and cuff
Symbols
SN
BT
IP
Function/Meaning
Stand by and turn the device on.
Direct current
Type BF: Device and cuff are designed to provide
special protection against electrical shocks.
Serial number
Refer to instruction manual/booklet
Keep dry
Bluetooth address
®
Ingress Protection symbol
E-11