Every second counts when it comes to saving lives during an emergency. First responders need to have accurate and effective radio communication in all areas of a building - especially in spaces where RF communication signals can get lost. A Bi-Directional Amplifier (BDA) system amplifies in-building Radio Frequency (RF) signals. This radio signal solution is programmed to perform in structures with dead zones, which can be caused by metal, concrete, steel windows blocking RF communication signals. CIS can perform your RF Site Survey to insure your facility has appropriate signal strength.