Gavita 906088 Pro 1000e DE Lamp, 120/240V, 120/ 240V Controllable output: dim or boost your light to adjust it to changing circumstances or grow phases Soft dim which gradually changes the output when switched, eliminating stress on the lamp Lights more than 2 square meters with 1000 mol m-2 s-1, No electromagnetic interference problems through the integrated design Equipped with very high frequency Gavita electronics (&gt;100 kHz), Plug-and-play installation, Control range 50-115% Suitable for high frequency 400V electronic horticultural lamps with 10-25% more output than traditional HPS lamps