Mitsubishi Electric PLC ALPHA Base Unit 15 inputs/9 relay outputs, DC, Type: ALPHA MAIN UNIT, Power Supply (V): 24, Current Type: DC, Program Memory: 200 BLOCKS, Program Memory Unit: EEPROM, Integrated Digital Inputs: 15, Integrated Digital Outputs: 9, Integrated Analogue Inputs: 8, Output Type: RELAY, Local I/O Points: 24, Local + Remote I/O Points: 24, Expandable YES, RS-232: 1, Power Consumption: (W): 9, Buffer Battery: NO, Protection Class: IP20, Min. Ambient Temperature (°C): -25, Max. Ambient Temperature: (°C) 55, Series: ALPHA2,