In HRD Fire fire alarm control center or control panel, SMD circuit production technology is used and it has EN54-2,4 standard. The number of zones is 10. The number of buttons that can be used for each zone is unlimited and you can even consider up to fifteen 30mA sirens for each output. In addition, you can install up to 20 standard HRD Fire smoke detectors and up to 30 HRD Fire heat detectors for each zone. The ability to support 10 zones, the possibility of installing 20 smoke detectors in each zone, the possibility of installing 30 thermal detectors in each zone, with an alpha switch resistant to electromagnetic noise, the possibility of testing the siren.