Philips Hue Wall switch module is a battery-powered Hue accessory that is installed behind your current switch. Connect it with a Philips Hue Bridge, adjust it through the Hue app and then check your light sources and fixtures. The module allows your Hue lamps to have power and does not lose connection even if you turn off your switch. You can also switch between different scenes by turning on and off, which gives you an easy way to customize your lights for special moments by using your current switch.