BellKeeper TA-100A Automatic Message Announcer

The BellKeeperTM TA-100A is a schedule based automatic message announcer that plays MP3 files at scheduled times of the day through either an external power amplifier (such as a PA system) or, with the integrated telephone interface, a PBX phone system (paging function).

By using a simple text editor, the user can easily create playback schedules based on weekdays (e.g. one for Monday, one for Tuesday, one for Wednesday/Thursday/Friday...) as well as user defined holiday schedules (e.g. 1/1, 7/4...) overriding weekday schedules.

Message playback can be arranged in a number of ways, such as single file single play, single file multiple play, multiple files single play, and multiple files multiple play.

It is possible to play background music whenever the system is not playing audio. The background music can come from either an external source such as satellite radio, or a group of pre-recorded sound files stored on the SD card.

The system supports emergency message broadcasting by providing 5 external trigger inputs for emergency events such as fire alarm and safety alerts. These trigger inputs are prioritized and override normal operation.

Typical Wiring Diagram


Typical Applications

*  Factory & school daily schedule announcement
*  Airport & train station safety reminder
*  Store weekday based advertising announcement
*  Automatic store closing announcement
*  Emergency message broadcast


Regular Schedules

weekday based

Holiday Schedules

individually configured for specific dates

Clock Resolution


Emergency Messages

5, externally triggered and prioritized

Background Music Support

internal sound files or
external music loop through

Audio Storage

SD/SDHC card (2GB/32GB max.)


line out & PBX telephone system interface

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Radio Receiver