1.EVERY HOUSEHOLD CAN CONFIGURE 1-2 OUTDOOR STATION AND 1-6 INDOOR PHONES 2.INDOOR PHONE CAN UNLOCK THE DOOR 3.INDOOR PHONE CAN FULFILL INTERNAL CALLING AND SPEAKING WITH EACH OTHER 4.PIN-HOLE AND ORDINARY CAMERA FOR OPTION 5. OUTDOOR STATION IS INSTALLED WITG METTALIC MATERIAL, WATER-PROOF , VANDAL-RESISTANCE.
