The Honeywell Optimizer Unitary Controller, offering 24 IO, is a general-purpose and fully programmable device equipped with 16 UI, 4 SSR, 4 relays, Modbus RTU, Sylk, and BACnet MS/TP communication capacities. It ensures robust data transmission through a daisy-chain Ethernet connection for an extended range without compromising speed. This controller has been engineered with built-in tools including a function block library and sample application templates, ensuring a consistent user experience across room and plant controllers and supervisors.

With features like power failure detection and data recovery, the controller ensures continuous performance. Offering added protection with optional terminal covers, it effectively eliminates the need for cabinet enclosures. Assembling is made easy with DIN rail mount and surface mount options.

In terms of technical specifications, the controller belongs to the Optimizer Unitary product family and employs a BACnet MS/TP and Modbus RTU communication network. The RS-485 and two 10/100 switched ports enhance its connectivity. It finds extensive application in AHUs, fan coils, and unit ventilators.