16-channel Open Collector Isolated Digital Output Module. I-87057PW offers 16 channels for digital output, each of which features Photo-couple isolation. I-87057PW supports sink type output with shortcircuits protection. There are options for power-on value and safe value for your consideration. I-87057PW has 16 LED indicators for DO channel status. 4 kV ESD protection, 3750 VDC intra-module isolation are standard.Features:Support Digital Outputs..