Expansion module 4 analog input outputs - 24 VDC/h2 power supply>The SR3XT43BD expansion module manufactured by Schneider Electric allows you to increase the number of analog inputs and relays of your Zelio logic PLC. Please note this input output module is only compatible with modular Zelio Logic controllers. Compact models cannot accommodate extensions. Total number of inputs and outputs: 4 Number of inputs: 2 Of which 0-10V: 2 maximum Of which 0-20mA: 2 maximum Of which PT100 probe: 1 maximum Number of outputs 0-10V: 2