The AlertMaster® AMDX™ Door Announcer, by Clarity®, is a transmitter that provides alerts to the sound of a door knock or doorbell. It is an ideal solution for those with a moderate-to-severe hearing loss.
Nine-volt battery included. The AMDX is an optional accessory to the AM6000™ Notification System; a receiver is required.
What else do I need to make this work?
In order to be notified, you will need to purchase a receiver that lets you know when the signaler or transmitter is activated.