Are LED dimmable?

Yes, relatively easy. LED controllers ordinary use one of two methods for luminous flux dimming: decreasing the value of the active current or voltage (phase adjustment), either pulse width modulation. PWM method is more common in case of LED luminous flux dimming because of the wide range of regulation (dimming) and linear dependence between the modulation level and the value of luminous flux. LED luminous flux can be dimmed using numerous devices regulating controlled by analog signal 1-​10V or digital type DMX and DALI.