ControlEdge™ RTU ControlEdge™ RTU is a powerful, modular and scalable controller capable of all remote automation and control applications. What Is It? With Honeywell’s ControlEdge RTU process controller, users will have an edge into realizing the best utilization of their distributed assets through efficient remote monitoring, diagnostic and asset management capabilities. The RTU is designed to withstand harsh environments and for easy deployment at remote sites. It also