Dahua Wireless Alarm Hub 4G Model

Supports 150 wireless peripherals (6 sirens, 64 wireless keyfobs).
Peripherals status display (signal strength, battery level, temperature,program version).
Wired, Wi-Fi, 4G, 3G or GPRS network connection.
Dual SIM and Single Standby.
Automatic network replenishment (ANR).
Video linkage on App.
Frequency hopping function and two-way communication technology ensure communication stability.
Cloud update and automatic recovery from update failure.