The dimability of LED lighting products depends among other things on the lamp ballast used. The lamp must always be dimmable according to the manufacturer, i.e. operating instructions or information from the manufacturer! Even if the LED lamp is dimmable, one must take into account that each 2-wire dimmer requires a base load to function securely, i.e. flicker free. With a “normal” phase control dimmer (Triac dimmer), dimmable LED-bulbs can usually be dimmed. The base load specified for these dimmers can usually be reduced by a factor of 2-4, i.e. for a 40W base load, LED lamps from approx. 10W are also dimmable. This is not the case for phase angle control dimmers that require an operating voltage, such as the DIMMAT, in order to function, which has to react to the sensor surface being activated. For these dimmers, such “standby” power consumption can lead to the connected LED lamps flickering, which in turn depends on the structure of the ballast unit. There are ballasts that have so-called bleeder resistors built-in for this “purpose”, which is essentially supposed to ignore this “standby” power; however this is not always clear from the manufacturer. Therefore the current recommendation is that (even dimmable) LED lamps should not be operated using the DIMMAT. Since the nature of the ballast of the LED-bulbs is not known to us, an eventual malfunction or possible defect cannot be excluded. The current limited by the fuse of a standard 400W dimmer can in any case be sufficient to destroy the LED lamp. In this respect, it must be stressed once again that the instructions of the LED lamp manufacturer must be strictly observed.