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Osram Optotronic OTi40W/120-277/1A4/DIM-1 AUX Constant Current LED Driver - 120-277V - 8-55VDC Output Volts - 0-10V Dimming - Programmable
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Osram 57994 Optotronic 25W 347V AC 50/60Hz Constant Current Dimmable Compact LED Driver OTi25W/347/1A2 DIM-1 - Amazon.com
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