This is a graded product. A1 products are as new but have been box opened. All A1 products will be fully bubble-wrapped for transportation. GRADE A1 Key Features. Switch appliances on & off from your smartphone or tablet Turn any plug socket into a smart power outlet Works with Yale Smart Home Alarm systems Use the Yale Smart Living App that's compatible with both i OS and; Android Unobtrusive Design LED Status Light The Yale Power Switch is wireless & easy to pair with your Yale Home Alarm System* allowing you to extend you system to tailor it to your individual needs. This accessory means that you can turn home appliances on & off remotely (i.e. lamp or radio) via the Yale Smart Home Alarm App on your Smartphone. * Compatible with Yale SR- Smart Home Alarm Systems. What's in the Box. Yale SR-PS Smart Power Switch..