800-825-6758

VP 952-388-2152 (FOR DEAF)

Live better,
no matter how you hear.

Guaranteed Lowest prices. Free Shipping. Free Returns.
Guaranteed lowest prices.

We guarantee the lowest price on every single item we sell, every hour of every day. In the rare chance you find a lower price somewhere else, let us know and we’ll make it right.

Free shipping

Free & fast ground shipping on ALL orders to the 48 contiguous United States. Extra shipping charges apply for orders to Alaska, Hawaii, Puerto Rico, and Canada. View our full shipping policies here.

Free returns.

Free returns within 30 days for all customers in the 48 contiguous United States. We’ll even cover the return shipping. View our full returns policy here.

Lowest prices. Free
shipping & returns.

0

Serene Innovations CentralAlert CA-DXH Hanging Door Knock Sensor

Hang the CentralAlert™ CA-DX Door Knock Sensor on a doorknob and detect vibrations from knocks on the door.

Serene Innovations CentralAlert CA-DXH Hanging Door Knock Sensor

Hang the CentralAlert™ CA-DX Door Knock Sensor on a doorknob and detect vibrations from knocks on the door.

SKU #HC-CADXH IN STOCK

Ships FREE within 24 hours
This item will be shipped within 24 hours. Ground shipping is FREE within the 48 contiguous United States. Expedited shipping options, as well as ground shipping to Alaska, Hawaii, Puerto Rico, or Canada are available for an extra charge.

Retail Price: $55.00Save $7.05

$47.95

QTY

Lowest price, guaranteed

  • Overview
  • Additional Details
  • Accessories
  • Q&A
  • Customer Reviews
  • Manual
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.

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"



Back to top