This linked document is used to when pairing via Bluetooth SPP (Serial Port Protocol) directly to a PC (not using a base station for communication).
https://dl.waspbarcode.com/kb/scanner/wws800-wws850-spp-bluetooth-with-pin.pdf

This is required when pairing to a PC when using an application that requires serial input, or when pairing an older WWS800/850 unit that does not support the HID method of Bluetooth pairing.

Additional information:

Serial-to-Keyboard utility download:
https://dl.waspbarcode.com/kb/scanner/PCSerialWedgeInstall.zip