TaoTronics TT-BS002 - Manual (Page 69)

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afresh, and perform download function again.
c. Please confirm using correct COM port and communication
parameter when using RS232 interface; or check if connection wire is OK;
or inquire about software edition and discuss with engineer
d. Please confirm connecting keyboard or replace another
keyboard; or test with different operating system; or inquire about
software edition and discuss with engineer.
Appendix E
Some common ways to Keep the reader in good condition
1. Keep the protection flake clean
1) Protection flake：It’s used for keeping dust or something dirty from
entering into the inside reader, so cleaning the protection flake
regularly is necessary to ensure accurately reading barcode.