Locate manual for timer in new home Help, advice and problem solutions on all aspects of home appliances from washing machines to TV's

[NorfolkScrewdriver]

The house I've just moved into has a timer (see photo).
It has no make on it and I need to find a manual to be able to work it.
At the very least I need to find out how to switch it off!
Does anyone recognise it?
Many thanks

unidentified timer

[ericmark]

If you google "immersion heater timer" and click on images you can scroll through the pictures far easier, it would seem "LGA Selectric Digital Immersion Heater Timeswitch" seems to match.

This https://guidessimo.com/document/1333987 ... ual-4.html seems to be link to instructions, I have said how I found it in case I have wrong one.