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This door knock sensor has an extra bright light that flashes for several seconds after someone knocks on the door.
This door knock sensor features a vibration sensitivity switch. Use it for the entry door, bedroom, bathroom, hotel room, dorm or workplace. Door hanging bracket/hook & loop fastener included. Battery powered. One year warranty.
[Click for user manual]
Availability: In stock, usually ships within 1 to 3 days. |
