Digital input module

The 6ES7321-1BL00-0AA0 is a digital input module for the S7-300 PLC from Siemens. It has 32 digital inputs and no outputs. This product is brand new and original, ideal for industrial automation applications.

Siemens S7-1500 digital I/O module with 16 inputs/0 outputs and part number 6ES7521-1BH10-0AA0.

Expand your PLC with the Eaton EASY‑E4‑DC‑8TE1P module, featuring four digital inputs, four transistor outputs, and built‑in Ethernet for effortless network communication and control flexibility.

The Cube67 DI16 E expands a PLC with sixteen digital inputs, each wired through an M12 connector for robust fieldbus compatibility. The included passive M12 splitter box distributes signals to multiple devices without active electronics, ensuring clean, isolated input lines and simplifying installation in industrial environments.

The Siemens SM 1234 is a compact I/O module that bundles four analog inputs with two analog outputs, handling ±10 V or 0–10 V signals. It offers configurable scaling, on‑board filtering, and plugs directly into S7‑1200/1500 PLCs for precise process control.