ART-ARC3000H-03-FW2(868) Alarm KIT > Supports 150 wireless peripherals (6 sirens, 64 wireless keyfobs). > Peripherals status display (signal strength, battery level, temperature, program version). > Dual SIM and Single Standby, auto switching. > Automatic network replenishment (ANR). > Video linkage on App. > SOS emergency alarm. > Frequency hopping function and two-way communication technology ensure communication stability > Cloud update and automatic recovery from update failure.