1. One to One Communication with Talk Back. (Two way Communication) : You can speak as well as Listen to any selected room number without disturbing other rooms. 2. All Call and All Rooms: You can Announcement of common all rooms. All announcement audible to rooms. 3. Group Call : Group can be made of rooms sharing common interests like senior, junior section, Playgroup, staff Rooms i.e. user can make 03,09,12,15,25 rooms each. 4. Selective Call: You can select room to destination room number directly in master controller. 5. Emergency Alarm: You can press emergency button warn to every class room with Panic siren and announcement like as earthquake, Short Circuit, Heavy rains etc. 6. Micro SD card: You can play music, player with Micro SD card. We can upload many sounds. 7. Bluetooth, Pen Drive, SD Card connectivity. 8. SOS Button : In classroom students are fighting. If any student press button in classroom call number to principal room take quick emergency action.