Radioline - I O extension module 4 NAMUR digital input module used in Radioline and PROFIBUS
PA MUX I O systems. Fulfills the NAMUR proximity sensor standard EN 60947-5-6 and
communication to the head stations for Radioline systems and the FB-MUX HS...PA via the T-BUS
connector installed on the DIN rail. This module has channel-to-channel isolation.
