... Model No.:OP-D6D3 Door Station, Door Bell, Door phone,security products, surveillance equipment, cctv.Specification: 1>.Call& two way communication ... in this home intercom;2>.Vidoe transmission for this home security system;3>.Home secuty with function of Release door;4>.IR ... CCD camera,with wild vision,perfect for home security products;5>.Size:212*126*45mm6>.NW:210gRecommended video indoor ...