CentralAlert Door Knock Sensor Model CA-DX
Install device on existing door chime or intercom door announcer for vibration detection. When someone rings your door bell, it detects vibration and sends a wireless signal to trigger the CA-360 to alert. Or, you can attach the CA-DX to the inside surface of your door to detect the knocking on your door.
- Detects vibration form existing doorbell or door chime and sends signal to CA-360 when someone is at the door
- Attach to or place near existing doorbell or door intercom
- 2.5mm jack for direct connection to doorbell terminal
- Optional door-knob hanger for hotel kit
- Sensitivity adjustment
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Returns & Exchanges
Qualifying products may be returned within 30 days from receipt for a full refund. Please note that hearing aid accessories, hygine items and ear care products cannot be returned. Please CLICK HERE to review our full returns policy.