Can someone advise how I remove the cover of the PIR in the photo? I guess that the cover is prised off, but before getting too carried away with a large screwdriver want to make sure I'm not going to do any serious damage. (The wall is being replastered, and I want to loosen the PIR in preparation. After all the work has been done I will replace it, but I want it working for now.)
Thanks in advance
Lloyd
Thanks in advance
Lloyd