Siemens – 3TK2810-1BA41 – SIRIUS Safety Speed / Standstill Monitor (24 V DC)

The Siemens 3TK2810-1BA41 (SIRIUS series) is a safety-oriented speed / standstill monitoring relay module intended for use in safety circuits. It supports dual-channel encoder or proximity inputs for safe motion detection and integrates logic for auto or manual start, enabling diagnostics, and output switching contacts.