I currently have a security light on my garage (at the bottom of the
garden) and used both for security and simply to see my way to the
garage in the dark, but I need to add one to the shed next to it, as it
is set back and in darkness alongside, making it difficult to get there
without tripping over in the garden or stepping in puddles (very heavy
clay soil).

Rather than two independent lights, I'd like to put a single PIR with
270° coverage on the corner of the garage and operate both together.

The existing light is a nuisance, as it is frequently triggered by cats.

I have looked for pet friendly, outdoor PIRs, but only seem to find
wireless ones that link into security systems. Has anyone seen a wired
version? Do I need to add protection to an indoor one instead?