Broadcasting Emergency System

1.Controller: Use of computer control technology,operation is simple and direct, many kinds of automatic functions, reflectpeople oriented ideas.Background broadcast monitoring station andemergency broadcasting monitoring station is switched by operation lock. Whenbackground broadcast, broadcast operation can be done by SD card, and start emergencybroadcast through 485 bus. When emergency broadcast, both manual operation andcontroller can start emergency broadcastChoose 24 loops broadcast area throughpress key.This system can do failure tests forbroadcast lines, power supplies and batteries and give sound-light alarmsrespectively. Sound-light alarm can be set to silence, light signal is continuousuntil failures disappear. Sound signal will work when next failure happens.emergency broadcast can broadcast to one ormore pointed areas, with monitoring functions for amplifying output.2.Amplifierlevel volumedigital control, durable, volume storage memory. When emergency broadcast,volume is at full and can not be changed.LED bar displayfor volume and output electricity levelQuick responselocked type output overloading protection, output short circuit protection,output over voltage protection, restore automatically.Large radiator is usedto give out heat, with overheat protection function.When AC is power supply,electricity is lower (lower than AC187V), Amplifier will switch to DC24V automatically,make sure continuous power supply.3.power supplySupply stablepower switch for system, monitoring power supply failures.Supply batteriesand switch between main electricity and batteries for system.Charge for storebatteries, monitor batteries failures.When main electricityis cut off, after 8 hours monitoring station, batteries must make sureemergency broadcast broadcasting more than 30 minutes.