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Features of Systems * 4-inch TFT LCD color monitor * Die- Cast camera housing vandal resistant * Door station has infra-red lighting (6 x LED) for low light conditions * Wall mounting * Door-u...

This products was a intercoms,can be used in around 100 meters .

1) Direct calling and dual talking 2) Real time monitoring door station 3) Remote control electrical lock 4) Ding~Dong~ ring 5) AL-alloyed door station 7) At most 3 monitors available for one do...