The number of sensors you need will depend on the size of your home. Most alarm systems feature 2-4 passive infrared sensors (PIRs) for motion detection, and 2-4 magnetic contact sensors on doors and windows. An alarm company will advise you of how many your property will need upon an inspecton.
Kilgetty
Kilgetty is a village quickly north of Saundersfoot in Pembrokeshire, Wales, at the junction of the A477 in between St. Clears and Pembroke Dock as well as the A478 in between Tenby and also Cardigan. The towns of Killgetty, Reynalton and Begelly make up the area of Killgetty/Begelly. At the 2011 Census, the population of the area was 2,011, raising to 2,262 at the 2011 Census.