The Natural Guard

This home security system is modelled on primitive 'torch systems', used by ancient peoples to define a circle around their territory, and warn off other groups and wild animals.

Placed in the corners of the garden, the Natural Guards create a motion detection fields (see diagram) using passive infrared and microwave technologies, which sense both motion and body heat of humans, but allows smaller mammals,such as cats and dogs to pass unhindered.

When the motion sensors are activated the system acts as an advance warning system - relaying a signal to the alarm inside the house & alerting the household before an intruder makes an attempt to gain entry to the building. The intruder is likely to abandon a break-in attempt if he is warned while still in the yard that he has been detected by the occupants of the target house.