I purchased a Infra-Red dimmer light switch with remote control. The description states it will control up to 4 different light circuits. Perfect for what I require. When I received the product, the light switch only controls one circuit. The remote, controls up to four circuits so therefore you need to purchase another three light switches if you want the controller to control all four circuits. As I had already laid the electrical circuits it was not possible to add another three dimmer switches for this to operate as stated. The description should show a master switch with remote and then additional dimmer switches (as slaves sold separately).