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Knock Alert Page   

 

 

  Knock Sensor                                             SC-KST3240-L

With Knock Sensor, a bright flashing light will alert you when someone knocks at your door. Sensitive to vibrations only, the Knock Sensor will not pick up other outside noise. Light will automatically shut off after five seconds. Also available with Door Bracket (see SC-KST1 below). One year warranty.

 

  $34.95 

  

  Knock Sensor with Door Bracket                       SC-KST1

With Knock Sensor, a bright flashing light will alert you when someone knocks at your door. Sensitive to vibrations only, the Knock Sensor will not pick up other outside noise. Light will automatically shut off after five seconds. Package includes a door bracket which installs in a “blink” to your door to hold Knock Sensor in place. One year warranty.

 

  $41.95 
 

 

  Knock Sensor with Orange Light                            KM-KNOCKSENSOR

A door knock signaler which flashes a bright orange light when someone knocks on the door. Installation is easy--simply place it over the top of any door with the door knocker bracket (included). Requires one 9V battery (not included). One year warranty

  $29.95

 

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