Wireless magnetic contact with vibration and tilt sensors. Designed to detect break-ins and attempted break-ins, DoorProtect Plus Jeweler provides comprehensive protection for doors, windows, skylights and safes. Equipped with a reed switch as an opening sensor, the detector is protected against contact bounce. Two magnet sizes offer more mounting options. Thanks to an integrated acceleration sensor, the device detects vibrations and tilting movements and protects the object even when the windows are open.