Building Intercom System

Functions:1) Suitable for tall buildings or many stories building2) The system supports doorbell, intercom, lock-controlled, call, emergency    calling, automatic alarm, patrol with card functions together3) 1 system can be selected several outdoor stations to control different     entrances, and set an area access host4) Outdoor station with stainless steel structure, and can mate with an IC     card to realize the card unlocking and patrol with card together5) The indoor extension no need code, but they can interchange, the problem     or short-circuit of extension will not influent on the system normal working6) Indoor extension with 5 alarm injunctions, draw away or set intrusion by    password or remote controller7) The management center can record the outdoor working situation and also    can connect with mirco-computer for united administration, it still can connect    with several management centers8) The outdoor station connect to story charger and story charger to extension    also connected by 4-pair wire. Outdoor station paralleled connection send     the information to management center by 3-pair wire9) Network is availableSpecifications (outdoor station, DH-999-C5):1) Power supply: DC 18V/2000MA2) Power consumption: 50MA/300MA3) Distortion: