NATIONAL INSTRUMENTS NI 9476 is C Series 32-channel sourcing digital output module for CompactDAQ and CompactRIO. It supports 6~36VDC external power, single channel max 250mA, 500µs update rate, optional 37pin D-SUB or spring terminal, IP40 rating and -40~+70℃ wide temperature. It drives relays, solenoid valves and indicators with per-channel short-circuit protection, configurable in LabVIEW. Optional conformal coated version available, widely used for automated test and industrial discrete control system retrofit and maintenance.