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Normally, home security systems consist of the basic security control pane, the key pad, the pre-wired door and window contacts, internal siren, wired or wireless link to the monitoring station, and power supply with battery backup. However, these might not be sufficient to provide complete protection to your property. Home security systems have several optional accessories apart from the standard systems. It would be advisable for you to have adequate knowledge about such additional accessories also to have effective protection to your house.Motion Detectors activate the alarm when any kind of movement is detected inside the house. These detectors would be able to cover large areas and watch several entry points simultaneously. The best motion detectors also have a built-in pet immune motion detector, so that pets like cats and dogs left inside the house do not trigger the alarm.Keychain remote wireless devices help you to activate or disarm the security system whenever needed. Usually, these devices are provided with a panic button that would alert the monitoring agency when you are not able to reach the key pad inside the house.Glass break detectors are mounted on the ceiling in.