The SIEMENS 6ES7335-7HG02-0AB0 is a SIMATIC S7-300 analog module, specifically an SM 335. It features 4 analog inputs (AI) with 14-bit resolution and 4 analog outputs (AO) with 11/12-bit resolution. This module supports isolated voltage and current (U/I) measurements and includes diagnostics and interrupt capabilities. It is rack-mountable and connects via a 20-pin connector.