{"product_id":"automated-logic-u551ak-bacnet-ms-tp-controller","title":"Automated Logic U551AK BACnet MS TP Controller","description":"\u003cdiv\u003e\u003cp\u003eAutomated Logic U551AK BACnet MS\/TP Controller is a compact control module designed for low-end, high-volume terminal control applications, such as heat pumps and fan-coil systems, and it communicates natively on BACnet MS\/TP to integrate with WebCTRL and other BACnet networks. The unit provides five digital outputs for actuating devices, two LogiStat inputs for sensors or status feedback, three general-purpose inputs, and a single analog output for variable-speed or analog control. This configuration supports straightforward local control with BACnet visibility of points and status, enabling seamless monitoring and control within a building management system. Using an MS\/TP (RS-485) interface, it can be wired into an existing BACnet MS\/TP subnetwork without requiring IP networking, making it a practical choice for upgrading or expanding terminal-unit control in small-to-mid-sized installations. Typical applications include controlling heat pumps, fan-coil units, and other terminal devices where reliable BACnet MS\/TP communication and direct actuator\/sensor I\/O are needed. BACnet MS\/TP interface provides standard BACnet point visibility to the building management system.\u003c\/p\u003e\u003c\/div\u003e","brand":"AUTOMATED","offers":[{"title":"Used Surplus - Excellent Condition","offer_id":46274642804970,"sku":null,"price":72.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0716\/8039\/3450\/files\/GTG-STOCK-075.png?v=1788727429","url":"https:\/\/gtghardware.com\/products\/automated-logic-u551ak-bacnet-ms-tp-controller","provider":"GTG Hardware","version":"1.0","type":"link"}