The GSM Multi-Household Outdoor Unit Model B502 is a top-of-the-line product manufactured by our factory, for those seeking a premium outdoor unit solution. This device comes with a variety of features such as a sleek design, durable construction, and multi-household connectivity. It's perfect for those who need an outdoor unit that can support multiple households and is compatible with different types of GSM networks. The B502 offers a reliable, high-performance solution for those needing to transmit calls and data over long distances. Our factory assures you of the quality, ease of installation, and durability of this product. So, if you're in need of an outdoor unit, the GSM Multi-Household Outdoor Unit Model B502 is definitely the right choice!