The Allen-Bradley 1771-DS is a latching input module that detects and latches pulses from 0.1 to 5.0 ms. It supports independent or paired inputs, edge/level detection, and selectable pulse capture times for precise industrial control.
The Allen-Bradley 1771-NIS is an 8-channel PLC-5 input module. It provides 4-20mA current loop power for two-wire transmitters, operating in temperatures from 0 to 60°C.