Schneider Electric TM221CE16R Relay Output Module

Schneider Electric TM221CE16R is a Modicon M221 logic controller module that provides 16 I/O points: 9 discrete inputs and 7 relay outputs (normally open). The 10‑bit input resolution supports precise sensing of digital signals, and the unit includes Ethernet connectivity for PLC networking along with a serial line port for legacy communication. This relay-output variant is designed to work within the M221 family and can be expanded with TM3 expansion modules to enable local, remote, or distributed I/O configurations. With 256 KB of program memory and compatibility with Schneider Electric programming tools, the TM221CE16R is well suited for compact automation tasks such as HVAC control, machine interlocks, and other small-scale control applications that require reliable relay-based outputs.