Look into PSWControl – a Python library that can interface with PSW series even without the latest firmware, using SCPI commands.
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(RE429) series. This software allows technicians and emergency services to configure device parameters like RICs (Radio Identity Codes), frequencies, and alert patterns. Key Features of PSW 429 NT 2.27 Paging Configuration psw 429 nt 2.27 download
: It is a Windows-based diagnostic tool designed to communicate with the display's RS-232C serial port.
If you cannot obtain version 2.27:
"Firmware file for PSW 429 NT, version 2.27 – for RS232/RS485 control board."