S7-1200 signal board Inputs: 2 Digital Inputs, abbreviated: 2 DI Outputs: 2 Transistor Outputs, abbreviated: 2 TO Analogue outputs: 12 Bit ±10 VDC / 0...20 mA Series: SIMATIC S7-1200 Protection rating: IP20 No. of digital inputs: 2 No. of transistor outputs: 2