The OPTO 22 IDC5BQ Quad Pak 4-Channel DC Input Module is a four-channel digital input device that accepts 4–16 VDC signals and translates them into fast, logic-level inputs for Opto 22 automation hardware. Each of the four channels can be driven by DC sources in the 4–16 V range, providing high-speed state changes suitable for real-time sensing of switches and sensors. As a Quad Pak module, it consolidates four independent DC inputs in a single package to streamline wiring and deployment in Opto 22 I/O configurations.
