The PCIE-1761H provides 8 opto-isolated digital inputs with isolation protection of 2,500 VDC for collecting digital inputs in noisy environments, 8 relay actuators that can be usedas a on/off control devices or small power switches.All of the input signals can be used as interrupt request signals and also disable or enable the interrupt in each channel and support the edge of the input signals, at which to generatean interrupt. all of PCIE-1761H DI channel has a digital filter to prevent wrong recognition of input signals from carrying noise or a chattering.