I use a telephone pager to switch on and switch off my landing lights. Works by phoning the pager number which goes through an automatic response systen to pass a message to the pager which in turn activates the landing lights relay. One call to switch 'on' and later, must be more than 3 minutes a further call switches them off. reat system, but I believe that pagers are on the way out so it might not now be the way to go.