I thought this would be straightforward but I seem to be going round in cicles.

I live out in the sticks and it's pitch black in the evenings. As a temporary measure I would like to put a battery powered wireless PIR at the end of my drive and link it to a receiver in the woodshed, some 40m distant, to turn on the external lights on said shed hoping to prevent Mrs G fracturing something in all the potholes. I've already run power to the shed with the intention of carrying that on to the gateway at some yet to be specified time in the future.

So, I would be very grateful for any recommendations for suitable kit as Google doesn't seem to be co-operating tonight.

Many thanks.