Wireless Apartment Intercom System

Advantages: -Open the gate with a FREE call from authorized phones; -Each room has an opening door password and 5 authorized phone numbers and 10 IC card; -Inbuilt Quad-band 850/900/1800/1900Mhz GSM module, 3G is optional; -User Friendly Design, LED Screen, Alloy Shell and keypad, Easy for installation; -Authorized 200 households open the gate, designed for large apartment; -High quality two-way communication, or carries out the open door action on the first 'ring' (Be switchable); -Nice price, Functional and practical, No indoor extension, No cabling cost, lower maintenance costs later; -2 Relay Outputs (NC/NO), compatible with Electronic Locks and CCTV Camera; -12V DC Power supply, Relay working time is programmable (1~300 seconds), when it is 0 second, indicating no action.