the pci-1762 relay actuator and isolated d/i card is a pc add-on card for the pci bus. it provides 16 opto-isolated digital inputs with isolation protection of 2500 vdc for collecting digital inputs in noisy environments, 16 relay actuators for serving as on/off control devices or small power switches. for easy monitoring, each relay is equipped with one red led to show its on/off status. the pci-1762"s sixteen optically-isolated digital input channels are ideal for digital input in noisy environments or with floating potentials.