Fed up with movement detectors for my outside lights (always turning on due to passing cats, movement of trees in the wind etc ) I decided to go for a wireless remote control. Very pleased with the results so I thought I'd share details with you.
The device I chose is called a "Donjon wireless remote switch" came from Amazon https://www.amazon.co.uk/DONJON-Household-Appliances-Electrical-Equipment/dp/B07CTL3TG6/ref=sr_1_1_sspa?crid=2TN7RIHBLLZEE&keywords=donjon+wireless+remote+switch&qid=1577728489&sprefix=donjon+wireless+remote%2Caps%2C208&sr=8-1-spons&psc=1&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUExT0FBTzlMU1JSQzhEJmVuY3J5cHRlZElkPUExMDM5NTg4SFMwNExBNzhSTVdZJmVuY3J5cHRlZEFkSWQ9QTA1MTAzNTMzT0pKOTVTWThZWkgmd2lkZ2V0TmFtZT1zcF9hdGYmYWN0aW9uPWNsaWNrUmVkaXJlY3QmZG9Ob3RMb2dDbGljaz10cnVl for the huge sum of 20€ in France just before Xmas.
It consists of a mains powered receiver unit and two key fob on/off controllers.
It works very well, even over considerable distances and through my 70cm thick stone walls. With the receiver safely in the barn out of the weather, I can still control the lights from inside the car at 50m+ distance from the house. Key fob controllers seem well made with nice positive action and with screws to open the case for battery changes. Too soon to comment on longevity.
A point to watch, the output is switched mains, that is to say, the relay connects the output to the supply for the unit internally, it is not a volt free contact.
Switch current is claimed to be 30A and it is true that there is a satisfying solid clunk from the relay, but the connections go via modest printed circuit tracks inside the unit, so I would hesitate to use the full 30A personally.
You can also add more controllers, the receiver unit "learns" the controller ID via a simple procedure. You push a button on the receiver to tell it to learn when the controller is operated. Works well.