Agent Siemens PLC 6ES7321-1BH50-0AA0 SM321 16-Channel 24VDC Source Digital Input Expansion Module
As an authorized Siemens agent, we specialize in supplying authentic 6ES7321-1BH50-0AA0, a compact SM321 digital input module for SIMATIC S7‑300 PLC systems. It provides 16 galvanically isolated source‑type digital inputs for 24VDC, suitable for connecting standard switches and 2/3/4‑wire proximity sensors (BERO). Genuine German manufacture, factory sealed, 12‑month official warranty, competitive agent pricing, global delivery support.