Siemens 6ES7231-0HC22-0XA0 SIMATIC S7-200 EM231 Analog Module. Siemens 6ES7 231-0HC22-0XA0 SIMATIC S7-200 EM 231 Analog Voltage Input Module for S7-22x CPU only, 4 x Inputs (0-10V DC), 12-Bit Converter
