... phone/entry/bell system,access control,door station/unit/camera,indoor phone/monitor,security product,video intercom. JB-304 ... VILLA INTERCOM SYSTEMNameDoor phone system,access control,door station/camera,indoor phone/monitor,security product,video intercom.Features DIY ... phones are optional.Pin-hole door camera is optional. Door stations technical parameters: Camera: 1/3 CCD(color), CMOS(b/w) Min. ...