The main function of public address system :
Public address system is a simple system,but it has the powerful function,not let’s find
out the basic function of public address system. It is widely used in schools,supermarkets,banks ect.
There are four main functions of public address system :
1.Play background music to reduce environmental noise
The role of public broadcasting in background music is to cover the noise of public places, thus
creating a relaxed atmosphere.. The average sound pressure used by the background music should
be in70db. When the background music to play broadcast, to remind people to pay attention to tinker
with.
2.Play emergency broadcast
The emergency broadcast system and fire alarm system is to get together as a standalone
system.Because emergency broadcast system is not used for a long time for the reliability
problem, perhaps usually test no problem, but when the official use but dumb, so now the
fire disaster alarm system and background music systems integrated together, strong
commonality of public broadcasting system.
3. Priority radio function
When the fire occurs, the fire radio signal has the highest priority broadcast power, and can use the fire radio signal to interrupt the background music automatically and call the radio to find someone to wait for the broadcast..
4. The constituency radio function
When building fired, in order to prevent confusion, it can only play for fire
disaster and its adjacent area. This selection feature consists of two automatic selection and manual selection, and ensure the reliable execution of the instruction..
Kerry Luo
Dongchuang International Industrial Limited
Add:
No1 Gonghe Road,Shaxi Huangqi,Nanhai,Foshan,Guangdong,CHINA
Tel:
86-757-88773347
Email: dongchuangyp001@126.com
Skype:dongchuangyp001
QQ: 2850632517
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