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The RSU provides a variety of enhancements when used in conjunction with SmartBob remotes featuring an external start input, a four to 20 mA current loop analog output, and a remote display or readout of bin measurements. Each RSU serves as a simple interface between a single SmartBob remote and a programmable logic controller (PLC) or distributed control system (DCS) allowing the PLC or DCS to initiate a measurement and retrieve data. The RSU also provides a remote display and can be used to initiate a manual or timed measurement. The measurement on the screen is displayed in distance to product, height of product, and percent of product in the storage vessel in English or metric units.

Simple to wire and operate, the SmartBob remote connects to the RSU via an RS-485 cable or via a wireless device; one RSU is required for each bin. The RSU features a built-in timer which allows for setting of repetitive time intervals to activate measurements, which are shown on the easy-to-read LCD display. Both the most recent measurement and user information is stored in a non-volatile memory; therefore, the information can be recovered if power is removed or lost. Suitable for indoor and outdoor use, the RSU is available in both NEMA I and NEMA 4X models dependent on the mounting location and environment.