> For the complete documentation index, see [llms.txt](https://wiki.inels.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://wiki.inels.com/inels-bus/technical-manual-products/controllers.md).

# Controllers

- [GSB3-XX](https://wiki.inels.com/inels-bus/technical-manual-products/controllers/gsb3-xx.md): Glass Switch Button(Non-Symbol)
- [GSB3 XX/SX](https://wiki.inels.com/inels-bus/technical-manual-products/controllers/gsb3-xx-sx.md): Glass Switch Button with Symbol
- [MSB3 XX/XX](https://wiki.inels.com/inels-bus/technical-manual-products/controllers/msb3-xx-xx.md): Metal Switch Button
- [WSB3-20, WSB3-20H](https://wiki.inels.com/inels-bus/technical-manual-products/controllers/wsb3-20-wsb3-20h.md): Wall switch button, 2 buttons
- [WSB3-40, WSB3-40H](https://wiki.inels.com/inels-bus/technical-manual-products/controllers/wsb3-40-wsb3-40h.md): Wall switch button, 4 buttons
- [WMR3-21](https://wiki.inels.com/inels-bus/technical-manual-products/controllers/wmr3-21.md): Wall card reader
- [GCR3-30](https://wiki.inels.com/inels-bus/technical-manual-products/controllers/gcr3-30.md): Glass Card Reader