Pack of 2 eldoLED *2743X3 OPTOTRONIC Programmable Linear 50 Watts Constant Current LED Driver, 0 10V Dimmable OTi50 120 277 1A4 DIM 1 L G2 120 277Vac White Replacement Compatible with Osram 57452 Number of Items:2 resistance and drilling power Color:5Pcs*100g +5*Brush resistance and drilling power The user and thermometer should be in the same room for 30 minutes before use Constant Current 7ozKey Features & BenefitsOEM Programmable with 1mA resolution to perfectly match LED load and maximize performanceIntegrated OEM programmable features include: Constant lumen maintenanceEnd of life indicationLED thermal protectionDim to offSoft startProgramming doesn't require powering up or connecting the power supply to AC line voltageSpecification grade dimming down to 1% or 10% on 0 10V dimmersAvailable optional auxiliary output to power 12V