Knock Knock Door Chime Monitor

http://www.autobarn.net/door-chime-knock.html

Automatically alerts you with a chime when someone is knocking on the door.

This very convenient chime door sensor from STI helps take the guess work out of knowing if someone is knocking on the door. Knock-Knock is activated by the vibration caused from knocking on the door and transmits a signal to the receiver which will chime and alerting you when someone has arrived. The wireless transmitter allows the chime to be placed practically anywhere in the house or office up to 100 feet away from the door.

Features:

* Automatically alerts you with chime when someone is knocking on the door.
* Smart sensor is only activated by knocking sound.
* Easily mount sensor on inside of door with double-sided tape.
* Wireless transmitter lets you place chime anywhere in house or office, up to 100 feet from door.
* Hear when guest arrive while in the back part of the office, home or basement.

How It Works:

Easily mount the sensor on the inside of the door with double-sided foam tape or the screws provided. Place the battery powered wireless transmitter anywhere on the home or office up to 100 feet from the door. the smart sensor is only activated by a knocking vibration. STI backs Knock-Knock with a one year warranty.

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