Ajax Wireless Security Hub 2, Black, 2G, Ethernet, Video streaming, Photo//https://ajax.systems/ru/products/hub-2/#specBlockMaximum number of connected devices - Up to 100Maximum number of connected radio signal range extenders - Up to 5Video surveillance - Up to 25 cameras or DVRsUsers - Up to 50Rooms - Up to 50Scenarios - Up to 32Security groups - Up to 9Communication channels: Ethernet, two SIM cards 2G (GSM900/DCS1800 (B3/B8))Types of notifications: Push notifications, Phone calls, SMSProtection class - IP50Operating temperature range: From ?10°С to +40°СOperating humidity - Up to 75%