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.
Marazion
Marazion is a civil parish and town, on the coast of Mount's Bay in Cornwall, England, UK. It is 2 miles (3.2 kilometres) east of Penzance and also the tidal island of St Michael's Mount is half-a-mile offshore. At low tide a causeway connects it to the community as well as at high water passenger watercrafts lug site visitors between Marazion as well as St Michael's Mount. Marazion is a successful traveler resort with an energetic community of musicians who generate and sell paints and pottery in the community's art galleries. Marazion exists within the Cornwall Area of Outstanding Natural Beauty (AONB). Virtually a 3rd of Cornwall has AONB designation, with the very same standing and security as a National Park. On the western side of the town is Marazion Marsh, a RSPB book and a Site of Special Scientific Interest (SSSI).
