Petporte smart cat flap (chip reader) (Storrs S6)

Well used, approx 8 years old. Hasn’t been used for a year but was working fine when my car was alive. It’s switching on ok. Manual available online, not sure if this is the exact one https://www.scribd.com/document/425389632/Petporte-smart-flap-manual but I have a pdf copy if not