In addition to our BDA pictured below:
JUST ADDED TO OUR PRODUCT LINE:
The LED DoxBox System records and documents storage enclosure is correct solution for all system plans, including digital. Inside every DoxBox  is a 4 GB flash drive with a USB connector.  See cut sheet for more info.
https://ledinc.com/wp-content/uploads/2018/05/DoxBox.pdf

Bi-Directional Amplifiers are becoming more and more common in urban areas. Many localities are adopting codes requiring their use. With increased use comes the need more reliable monitoring and maintenance. We here at LED have developed a product to assist you with that.

Our panel allows for the remote notification of BDA system status, using both audio and visual means.  The panel comes with eight Status LEDs, audible alarm, lamp test and a common fault relay for connection to the FACP or BMS.  This panel is available as a standard interior model – or inside a weather-tight enclosure (shown above).