switching relay with 2 CO contact for 230V AC 16A control 12V AC Siemens switching devices for applications in residential and functional buildings and industrial applications. The innovative switching devices from Siemens are an important part of the SENTRON components for electrical installations. With the remote control switches, all-or-nothing relays, Insta contactors and time switches, they provide countless possibilities for implementing various switching functions. Whether for a residential buildings, infrastructure or industrial applications, Siemens offers the right portfolio for all switching functions. We provide the right device for every requirement. Key features of the switchgears from Siemens: 1. User-friendly and easy installation and connection technology. 2. Reliable safety during installation with standard touch protection. 3. Comprehensive and easy-to-install accessories. 4. Optimized technology for your safety – only from Siemens.