iSMA-B-12O-H Qty: -+ SKU: iSMAB12OH $501.50 Quantity discounts available QuantityPrice Add to Cart Call for Availability - (510) 636-7900 DetailsDetailsI/O module with Modbus RTU/ASCII or BACnet MSTP communication. 1xRS485, 12xDO. Power supply 24 V AC/DC.