Via the relay modules, outputs can be switched. A relay module has no specific function but can handle any switch functions: monostable (eg a doorbell), bistable (on / off), timer, interval, thermostat output. Some relays can also control motors of blinds, curtains, gates.

The range of Qbus dimmermodules goes from standard dimmers to dim halogene or incandescent lights over universal dimmers for any load to 0/1-10V dimmers to dim analogue circuits or energy savings lamps.