System of group annunciator

System of group annunciator about emergency situations of the people menacing to life and health group.
Allows to send the short message to all participants of group.
Create the group and share it with the friends, and you will be able quickly to notify each other.
Each participant will receive the message accompanied with a loud sound signal, a siren.
Also will see the message on the alarm reason.
For fast sending it is required to press the red button only.
Using the program you will be able quickly to receive messages from your friends on the begun shelling or military operations near your location, the flood, an earthquake, hurricanes and an other cataclysm threatening to your life.