lights on monitor

A friend of mine told me he had been approached by someone who proposed to put "these little pads by his doors that will tell him if he had left any lights on in the house". Any idea what there is that would be easily installed and would let you know whether a light was left on upstairs or in the basement?

Reply to
Chuck Norris
Loading thread data ...

What sort of "little pads"?

formatting link

Reply to
William Forums website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.