PA7500 wifi public address system includes a complete devices for wireless PA solution, such as control host, wireless signal transmitter, wireless signal receiver, wireless PA amplifier, wireless PA speaker, etc. With wireless transmission, the wifi pa system works in stable condition with wide broadcast coverage. The wireless public address system can do background broadcast, business broadcast, and emergency broadcast. Wireless outdoor pa system is an economic solution for large Public Address projects such as village PA system, gas field PA system, railway station PA system, etc.