# Controllers

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