Cino L780BT HC - Manual (Page 5)

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HID Mode
Scan “HID Mode” command, the link indicator of
the scanner will give 3 blue blinks per 2 seconds.
The Apple iOS device will discover a new device as
”Cino xxxxBT-xxxx”. Double-tap the “Cino xxxxBT-xxxx”
in the discovered Bluetooth device list. The Apple iOS
device will prompt a message for requesting for 4-digit
PIN code.