Serene Innovations Central Alert CA360 CA-DX Chime Doorbell Knock Signaler

Summary

AI-generated from vendor-published content · April 26, 2026

This wireless sensor detects vibrations from a doorbell, door chime, intercom, or door knocking and transmits a signal to a compatible receiver unit (the CA-360) that then flashes lights or triggers other visual/tactile alerts. It's designed for someone who is deaf or hard of hearing and can't reliably hear when someone is at the door — whether that's a faint knock or a standard doorbell chime. This is an add-on component, not a standalone solution: you must also own or purchase the Serene Innovations CA-360 receiver unit separately to get any notification at all. Sensitivity is adjustable to reduce false triggers, but placement and calibration can take some trial and error, especially in homes with noisy HVAC or traffic vibration.

What Setup Looks Like

• Out of the box
  Install 2 AA batteries (not included) in the CA-DX sensor.
• With a guide
  
  1. Mount the sensor on the door chime housing using the included adhesive or bracket, or stick it to the inside surface of the door for knock detection.
  2. Pair the CA-DX sensor with your CA-360 receiver unit following the CentralAlert pairing instructions.
  3. Test by ringing the doorbell or knocking, then adjust the sensitivity dial if false alarms or missed triggers occur — allow 15–30 minutes for full setup and testing.
  4. See manufacturer support resources for detailed instructions.

Where to Get It

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