The IO Flex 6126 is a general-use controller that can be easily customized to meet any sequence of operation needs. Fully capable of operating in a 100 stand-alone control mode, the IO Flex 6126 can connect to a Building Automation System (BAS) using any of todays four leading protocols: BACnet (ARC156, MSTP, and PTP), Modbus RTU, N2, and LonWorks. The point mapping to all of these protocols can be pre-set, so that the protocol and baud rates desired can be easily field-selected without the need for any additional downloads or technician assistance. The IO Flex 6126 provides ample inputoutput capacity on the base controller, plus support for an expander board if additional IO capacity is needed.