... nice and luxurious2. Weather proof, oxidation proof, durable alloy outdoor door station, supporting embedded and hanging installation. 3. High sensitive touch ... )4. No radiation, low consumption and high resolution 5. Monitor, intercom, unlock, hand-free and multi-melody.6. Able to connect ... my factory Wholesales 9" TFT LCD touch key wired video door intercom 1 to 4,support 4CH video in, 1CH video out ...