... ,FCC, CCC,Rohs Video Doorphone for 6 apartment Door bell:OP-D7D6-6 Functions & features:1.Call &Two way ... door function;4.Video transmission;5.IR CCD camera;6.Compatibility of video and audio indoor phone;7. ... 205*130*13mmNW:1080g Video indoor phone: OP-D7A7-B Functions & features: Item No.OP-D7A7-Bscreen size ... monitor in one house, the max amount is 6 house (moinitors) Recommend: suitable for small building ...