This TM3 safety expansion module monitors emergency shutdown pushbuttons and limit switches to conform to PLd / Category 3. It meets the requirements of PL d/Category 3 conforming to EN/ISO 13849-1 and SILCL 2 conforming to EN/IEC 62061. It has a module locking latch, 2 TM3 bus connectors designed to provide continuity of the link between connected modules, a symmetrical rail locking clip, display block for the module channels and diagnostics. It completes your Modicon M221, M241 or M251 PLC configuration with a dedicated safety I/O, without the need to use a complete safety controller. It has removable terminals for easier and better control wires tightening, thus improving installation reliability. Prop 65: WARNING: This product can expose you to chemicals including: Lead and lead compounds, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov - Compatible Products: TMAM2; ESEEXPCZZSPAZZ; ESECAPCZZSPAZZ - Cross Sell Products: TM251MESC; TM251MESE; TM241C24R; TM241C24T; TM241C24U; TM241C40R; TM241C40T; TM241C40U; TM241CE24R; TM241CE24T; TM241CE24U; TM241CE40R; TM241CE40T; TM241CE40U; TM241CEC24R; TM241CEC24T; TM241CEC24U; TM221C16R; TM221C16T; TM221C16U; TM221C24R; TM221C24T; TM221C24U; TM221C40R; TM221C40T; TM221C40U; TM221CE16R; TM221CE16T; TM221CE16U; TM221CE24R; TM221CE24T; TM221CE24U; TM221CE40R; TM221CE40T; TM221CE40U; TM221M16R; TM221M16RG; TM221M16T; TM221M16TG; TM221M32TK; TM221ME16R; TM221ME16RG; TM221ME16T; TM221ME16TG; TM221ME32TK