All Contact Sensors that fit on door or window frames, as well as the Motion Sensors, are wireless. They use long-life Lithium-Ion batteries that will last for up to two years. The Outdoor Siren is also wireless and again uses long-life batteries to ensure you have an easy, wire-free installation.
The Hub requires a standard 240v plug for power and also includes a battery providing 12 hours of continuous backup should the power fail. It is, of course, possible to provide mains power to the unit directly from a cable within the wall. It is a requirement to meet a grade II level specification that the Hub uses mains power and has a battery backup. The unit will also have the ability to detect if mains power is cut deliberately or through a power failure.
At present, we only support powering the hub using the power supply unit we provide. We are looking at other methods for providing power to the hub including from a fused spur, but currently, other methods are not supported and may invalidate the warranty on the hub if the supplied PSU is not used.