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These are simple devices that alert you by a doorknock.

 (ND-GAD-DB9) Notification Devices Door Knock Beacon with LED Light This handy device alerts you when someone knocks at the door. Use at home in the Bathroom, Bedroom, Entrances or away at work your Workplace, Hotel Room, Dormitory.
MSRP: $39.00
Your Price: $37.00
Qty:  
(SC-KST1) Notification Devices Door Knock Sensor Light
This knock sensor  will produce a bright flashing light when someone knocks at your door. Sensitive to vibrations only, it will not pick up other outside noise. Light automatically shuts off after 5 seconds.

MSRP: $34.95
Your Price: $33.00
Qty:  
(ND-HC-DK300) Notification Devices Door Knocker
NEW! Doorknock device can be used in one room apartments, dorm, office, hotels...anywhere. Its size makes it great for travel.

Light flashes when someone knocks at the door. Great for privacy, and portable use. Can be used as a flashlight in power outages.


Your Price: $29.00
Qty:  

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