Preventa XPSMCM Communication Module, 24 V dc. For Use With: Preventa Modular Safety Controller. Messaging: Communication, I/O Messages, Power Supply, Reset. Connection Type: RS485. Display Included: Yes. Mounting Style: DIN Rail. Dimensions: 22.5 x 99 x 114.5 mm. MPN: XPSMCMCO0000S1, Schneider Electric