Notifier’s Bi-Directional Amplifier (BDA) System is a signal boosting solution designed to enhance in-building radio frequency (RF) signal coverage for public safety radio. They are high gain, high power band-selective signal boosters/bi-directional amplifiers that can integrate directly to a Notifier fire alarm control panel. Designed and customized to meet all public safety frequency band ranges, it is intended to provide reliable two-way radio and FirstNet signal coverage inside building, tunnels and other structures. The band selective design delivers reliable performance in even the most challenging RF environments. When combined with Notifier’s fire system, Notifier provides the reliability and quality expected from a life safety solution.