- Optional accessory for the Central Alert Wireless Notification System (CA-360); Central Alert Portable Remote Receiver (CA-RX) or the Central Alert Wearable Pager Receiver (CA-PX)
- Wireless sensor that detects door knocking or door chime vibration and sends information to one of the three above systems to alert you
- Requires (2) AA alkaline batteries (not included)
- Operating distance: up to 200 feet
- Will not work when purchased alone; must be paired to either CA-360; CA-RX or CA-PX
- Can be wired directly to doorbell terminals where the electrical signal activates CA-DX
Serene Central Alert Door Announcer / Knocker
- Product Code: CA-DX
- Availability: In Stock
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$44.71
- Ex Tax: $44.71