The 2.8" Digital Video Doorphone Outdoor Unit Model B9 is a high-quality and reliable product from our factory. Our expert team of professionals has designed this product with precision and care, ensuring that it meets the needs of our customers. This unit is equipped with advanced features like a 2.8-inch color LCD screen, clear audio communication, and a durable outdoor camera with night vision capabilities. With its easy-to-use interface and sleek design, this video doorphone is perfect for homes, offices, and other commercial establishments. We take pride in our commitment to providing the best products and services to our valued customers. Choose us for the best quality and exceptional customer service.