Sometimes, especially in older houses or in situations where any disturbance to existing decoration would not be acceptable, a wireless system is called for.
In a normal hardwired system, each sensor is connected to a central control panel by a wire, similar in size to a telephone extension wire.
In a wireless system, wires are replaced by a radio-link. This enables the installer to position the sensor without having to worry about how to route a wire to it, making installation extremely easy and quick.
