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Osram Optotronic OTi 48/120-277/2A0 DIM-1 L G2 Constant Current LED Driver - 120-277V - 10-55VDC Output Volts - 0-10V Dimming - Programmable
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Osram 57351 Optotronic 40W 120/277V AC 50/60Hz Constant Current Dimmable Compact LED Driver OTi 40W/120-277/1A4 DIM-1 - - Amazon.com
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