Siemens 6ES7 222-1HH32-0XB0 Relay Output Module

Siemens 6ES7222-1HH32-0XB0 is the SIMATIC S7-1200 digital output module, known as SM 1222, delivering 16 relay-type outputs that enable the CPU to switch external devices through isolated relay contacts without overloading the controller. Each of the 16 outputs is a relay contact rated for up to 2 A, making it suitable for controlling solenoids, lights, and other actuators that require higher-current switching, while remaining compatible with the S7-1200 expansion design. Sold under the 6ES7 family, this 16-channel relay output module plugs into the SIMATIC S7-1200 system and is documented in Siemens' official product catalogs and data sheets as SM 1222 with 16 DO and a 2 A per-channel rating. The exact ordering number 6ES7222-1HH32-0XB0 identifies a 16-channel relay output option within the S7-1200 ecosystem, commonly listed by Siemens Industry Mall and partner distributors as an expansion module to extend discrete control capabilities for automation tasks such as lighting control, valve actuation, or other process automation steps.