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Serene Innovations CentralAlert CA-DXH Hanging Door Knock Sensor
All images shown are for illustrative purposes only. 
The Door Knock Sensor with Door Hanger is part of the CentralAlert Notification System by Serene Innovations. It sends to the CentralAlert receiver to notify you when someone is knocking on the door. The CA-DX Door Knock Sensor is ideal for bedrooms or hotel rooms and is safe and secure since there is no part visible outside the door.
Note: Requires item Serene Innovations CentralAlert CA-360 Clock/Receiver Notification System to work will not work without.
Features:
  • 2.4GHz operating frequency
  • Up to 210 ft operating range
  • Uses 2 AA alkaline batteries (not included)
  • Dimensions: 2.5" x 3.8" x 1"
  • One year limited warranty
  • Signals to Door Knock
Hanging Door Knock Sensor Manual

Category: Electronic Alert Systems

Return policy for this item
  • This supplier accepts return of new, unused items in their original, sealed internal packaging, in re-saleable condition.
  • No returns will be accepted after 30 days from purchase date.
  • Exceptions are noted in the product description.
  • Contact Customer Service at 888-746-2107 Monday - Thursday 9 AM ET - 7 PM ET, Friday 9 AM ET - 5 PM ET for a Return Merchandise Authorization number and return address.
  • Our complete return policy is available by selecting the Return Policy link in the footer of our website.