The dimmer is powered via an economical external DC source, which can be adapted to the power required. It can be operated via FS20 remote control or via an external button, and emergency control directly from the device is also possible. As well as the manual dimming function, three separately programmable automatic timers are available: A switch-off timer, a slow-on timer (fade in) and a slow-off timer (fade out). The timers can be programmed for between 1 s and 4.5 h.