When choosing a burglar alarm, one of the key things to consider is whether you want your alarm to be wired or wireless. With a wired alarm, a network of wires is used to connect hidden sensors throughout the property to the main control panel. The system is then connected to the outside world via your landline. A wireless alarm uses hidden sensors, which are connected to the main control panel via radio waves. The system is then connected to the outside world using a mobile phone network.