This TM221 controller is part of the Modicon M221 Logic controller range. It has 24 logic I/O and it is supplied with 24V DC. It is supplied with removable screw terminal blocks for connecting the I/O, a removable screw terminal block for connecting the power supply, a button cell backup battery BR2032 and a cable for connecting the analog inputs. M221 logic controllers have three types of integrated communication port, Ethernet, RS 232/RS 485 serial link and USB mini-B programming port. It enables the control of simple machines. The capacity of M221 logic controllers can be enhanced with the Modicon TM3 expansion module offer. Achieve benchmark performance while increasing profitability with Modicon M221 through intuitive machine programming with EcoStruxure Machine Expert Basic.