... 260V,3, 4 AC current input channels of: 1A/5A, optional.4, 16 dry event input channels (12VDC supplied by device internally)5 ... , 16 wet event input channels (24,110,220VDC, optional ... according to requirement of customer no more than 16 channels.Event channel: 64(total), 16 channel per group, with power supply or none ...