Door Hanger with Door Knock Sensor

Manufacturer: Serene Innovations

Know when someone knocks at the door
  • Detects vibrations from door knocks and signals receiver
  • Requires Central Alert receiver (not included)
  • Easy to use— just hang it on the door knob/handle
  • Ideal for use in hotel rooms and bedrooms
  • Uses two AA alkaline batteries (not included)

SKU: 931058
Our Price: $55.00
Availability: Usually ships within 1 to 2 business days
Get an instant alert when someone knocks on the door with this alerting device! Simply hang this door-hanging door knocker transmitter on a doorknob and it will detect vibrations from knocks on the door and send a wireless signal to your existing receiver system (not included).

This alerting system is safe, secure, and discreet— since you hang it on the doorknob/handle inside the room, there is no visible part outside the door. Ideal for ensuring privacy in hotel rooms or bedrooms.

IMPORTANT NOTE: This is a transmitter only; it requires you to have a receiver (not included). Compatible with Serene CA360 CentralAlert Wireless Notification System (item 931001) and Serene CentralAlert RX Vibrating Remote Receiver (item 931002).

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