A RTU (Remote Terminal Unit) manufacturer is a company that designs, manufactures, and supplies RTUs. RTUs are specialized electronic devices that are used to control and monitor remote locations, such as oil and gas fields, water and wastewater systems, and other industrial sites. RTUs are used to collect data from remote locations, and then transmit that data back to a central control station. RTUs are also used to control and manage the operations of remote sites, such as turning on and off pumps, valves, and other equipment. RTUs are usually connected to a communication network, such as a cellular network, to transmit data. RTU manufacturers typically design and build RTUs with specific features and capabilities to meet the needs of their customers. RTU manufacturers also provide support services, such as installation, maintenance, and repair. RTU manufacturers typically have a wide range of products, including both wired and wireless RTUs, and they are often able to customize RTUs to meet specific customer requirements.