Digital Input Card

I/O channels: 16 opto-isolated inputs, 2 banks of 8, +ve or -ve polarity I2C bus channels used: 16 of 128* digital Input voltage: 24V dc nom Size 91 x 93mm * The first 64 digital channels are available immediately and the second 64 are available by substituting alternative driver chips in place of those supplied in the card. This is a simple and inexpensive operation.