KEYENCE BL-N90 Series - Manual (Page 44)

3-1 Reading
3-4
3
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Number of beeps from the buzzer
The buzzer sounds according to the operations shown in the following table.
Number of
beeps
BL-N90 status
1 time
When barcode reading is complete
During sleep mode (long buzzer)
2 times During reading: low remaining battery
When wireless communication is disconnected
When wireless communication is reconnected
3 times
When reading the program barcode
Continuous
Press the page button on the communication unit to check the connection, then
press the page button again to stop the buzzer.
Error: 1 time
When a normal barcode is read while setting the program
Error: 1 to 2
times
When a barcode is read without establishing wireless communication
1
2
3
Repeat