Viable for use in water treatment, agriculture, automotive, and other apps, the HE359 series debuts as a cost-effective universal remote I/O module. It connects via a two-wire RS485 Modbus RTU to any programmable logic controller. A total of 31 I/O Modules can daisy-chain on a single RS-485 link. Available I/O modules include digital in, relay out, analog in, analog out, RTD, and thermocouple. Price Starts at $200 each. OMEGA ENGINEERING INC., Stamford, CT. (800) 872-9436.