1. Both dimmer sent on the same frequency, an absurdity when you have to control different lamps.
2. Although specified in the manual input currents of 12-24V both fell within 3 days Dimmer (!) After installation. Ironically, just before Christmas on the road in the winter holidays. Although not proven, I think that it is the defect is an in electronics.
. A replacement in a Conrad-branch the 1.5 more expensive was done since the installation (without complaint their service Here were the different frequencies so that could be controlled individually, the bulbs per Stk. - So that should be.
