Serene CentralAlert CA-DX Door Knocker Sensor
This is not a standalone unit.
Install device on existing door chime or intercom door announcer for vibration detection.
Can use up to 4 transmitters (CA2004)
ID: CA-DX or CA2004
This product requires:
Serene CentralAlert CA-360 Notification System
or
Serene CentralAlert CA-RX Remote Receiver
This product works with:
Serene CentralAlert CA-360 Notification System
