Door Bell Sensor Wireless Keeps you aware of intruders or visitors anywhere around your home Door chime trigger by motion Door Bell Sensor Wireless Keeps you aware of intruders or visitors anywhere around your home Door chime trigger by motion Features:Weight: 98gSize: 100 x 65 x 36mmExtend your home security systemNo Wiring is required, Plug-and-PlayKeeps you aware of intruders or visitors ...