Went for it and spent £13.86 on
https://www.ebay.co.uk/itm/Universal-Car-Alarm-Security-System-Anti-Theft-Burglar-w-2-Remote-Control/153276517670?
Its simple to fit with just 2 wires , and works on an adjustable sensitivity switch . Hopefully it’s nice and loud as hoping it will fit underneath the Drivers seat . Here’s hoping I don’t forget to deactivate 😱.
Pete , I did check whether a free COVID virus would be included, apparently they have run out so including a free vaccine.
I will report back when the alarm arrives from China , approx 1 month
Paul