BRX Remote I/O controllers allow thousands of additional I/O to be added to your system. Each remote controller unit can be expanded with up to eight I/O expansion modules providing 256 I/O points per remote rack. Six controller versions are available and are designed to work seamlessly with Do-more! systems, DirectLOGIC ERM modules or any Modbus Client/Master device. Supported protocols include Do-more! Ethernet Remote I/O, HOST Ethernet Remote I/O, Modbus RTU and Modbus TCP. All units have a built-in 10/100 Mbps Ethernet port. Modbus I/O units also have an onboard RS-485 port with removable 3-pin connector. Both 120-240 VAC and 12-24 VDC powered units are available; the AC powered units include an integral 24VDC auxiliary output power supply. BRX remote I/O controllers start at $159.00.