The Siemens 6AG1231-7PB22-2XY0 is a SIPLUS S7-200 EM231 analog input module rated for -25...+70°C with EN 50155 conformity, based on the standard 6ES7231-7PB22-0XA0. It's a spare part, meaning it's stocked for replacement of the base module in existing S7-200 installations — not a new design-in variant.
Source it as a drop-in spare for any S7-200 system that requires the -25...+70°C range and EN 50155 compliance.