CentralAlert Door Knock Sensor Model CA-DX Tube Inserters & Pullers It uses a bright built-in

It uses a bright built-in flasher

easy to use box

Previous SKUs: 3120 AL

Use Sound Tube Adapters with Comply Canal Tips for comfortable and easy to fit BTE demonstrations

Designed for heavy sleepers who have trouble hearing traditional alarm clocks

CentralAlert Door Knock Sensor Model CA-DX Tube Inserters & Pullers It uses a bright built-inInstall 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. Product Features: Detects vibration form existing doorbell or door chime and sends signal to CA 360 when someone is at the door Attach to or place