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The Dahua AirShield Wireless Security System offers excellent performance and complies with the EN50131 Grade 2 certification standards. 
As the core of this wireless alarm system, the Hub supports connection of up to 150 wireless peripherals through 433MHz or 868MHz RF band. Reliable RF communication technology – such as frequency hopping – is adopted to enhance the anti-interference capability of signal transmission between the Hub and peripherals. The two-way communication mechanism makes it very convenient to obtain configuration and status information of various devices and update them via the mobile app 

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