Clarity AlertMaster Door Announcer Transmitter,Door Announcer Transmitter,Each,AMDXPrice: USD56.65 Clarity AlertMaster Door Announcer Transmitter notifies user of an intercom, doorbell/chime or door knock from the Alertmaster system. It is an ideal solution for those with a moderate to severe hearing loss. It is used with the AL10 or AL12 AlertMaster Notification Systems, a receiver is required.Other products from H e a l t h P r o d u c t s F o r Y o u |