Siemens 6ES7 322-1HH01-0AA0 is a SIMATIC S7-300 digital output module that provides 16 relay-type outputs for switching external loads. Each channel supports up to 2 A, enabling direct control of solenoids, actuators, and indicator relays in industrial automation. Designed to expand a Siemens S7-300 system, it plugs into the standard backplane to extend discrete control across a compact I/O footprint.
