This Viribright 215W LED Economy UFO High Bay has a sealed die-casting profile for indoor and outdoor applications. Universal voltage of 120-277V. 1-10V dimming standard for a dimming range of 100% to 10%. Best choice for replacing 250W MH and 400W MH. Above 80 color rendition index compared to HPS. Increase energy savings with bi-level motion sensor. Optional emergency battery to serve in accidental situation. Operating temperature is -40℃ to 50℃(-40℉ to 122℉). Hook mount pendant mount and surface mount available.