default user code 1122, 3344, 1234, 5678
Engineer mode #11001#
Factory mode #987#
Enable COM port #11001# – Device – Set UART – PS Config – UART1115200
Restore factory settings #98799#
LCD contrast #369#
software version #800#
software version #900#
set default language #0000# Send
set English language #0044# Send
set English language (new firmware) #001# Send

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