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. 1 × RJ-45 10 M/100 M Ethernet port Single SIM (GSM:900/1800MHz, WCDMA:B1/B5/B8, LTE-FDD:B1/B3/B5/B7/B8/B20, LTE-TDD:B38/B40/B41); dual SIM single standby SMS, Calling Alarm Built-in lithium battery, standby for 12 hour Carrier Frequency: 868.0 MHz–868.6 MHz Communication Distance: Up to 2,000 m in an open space Encryption Mode: AES128 Wi-Fi: 2.4G/5G Power Supply 12V included Operating Temperature: –10 °C to +50 °C Product Dimensions: 163.0 mm × 163.0 mm × 32.0 mm