ECGsmart series 2G7 LED bulbs also function with external dimmable or non-dimmable LED driver so as to help transition towards the full LED lighting era. The transition between ECG and LED driver is seamless and painless, which will allow the existing fixture to stay and be reused in the current application. ECGsmart 2G7 series LED bulbs are not applicable to AC mains (85V~265V) or conventional control gear (CCG). If you need direct mains voltage for 4 pin 2G7 LED bulbs, please check out our AC-in 2G7 LED series.