The Osram 57452-50 OTi 50/120-277/1A4 watt 120/277 volt 50-60Hz Dimmable LED Driver is a programmable driver that can be programmed whether it's powered on or not. It uses 1mA resolution to match the LED load and maximize performance. It also has an end-of-life indicator, LED thermal protection, and constant lumen maintenance.. 1050mA default current. ***Please advise if you want a different current rating set***