An update
I bought one of these off that well known “auction/buy it now” market place.
MS309PRO Car OBD2 OBD Scanner Auto Code Reader Engine Diagnostic Scan Tool UK
i plugged it in today to see if it had any response. It seemed to work. Battery voltage test indicated 11.8. At the battery with a multimeter it measured marginally over 12 (it is now back on trickle charge).
No fault codes were indicated and I wasn’t expecting any. 
So hopefully as a glove box simple test tool it might do what it is intended for.

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