PWM Dimming Electronic LED Driver 300watt 12vdc 
Features 

• Output constant voltage   
• Input voltage range 100-277VAC    
• Built-in PFC function / PF>0.97    
• Efficiency >88% / Dimming range: 0~100%
• Protections:short circuit/over voltage/over heat
• PWM output, does not change the color index  
• Cooling by free air convection / Flicker-free   
• Work with leading edge and trailing edge triac dimmers available
• Metal housing, suitable for dry, damp, wet location
• PWM output, does not change the color index  
• Strong compatibility, flicker-free dimming
• Suitable for LED lighting and moving sign applications
• Compliance to worldwide safety regulations for lightings. 
• Compatible with Forward phase, Reverse phase, Triac, MLV, ELV Dimmers
• 7 years warranty   

Dimming Operation

Output constant current level can be adjusted through input terminal of the AC phase line(L) by connection a triac dimmer.
Compatible with Leading edge or trailing edge triac dimmers, but trailing edge dimmers work better.
Please try to use dimmers with power at least 1.5 times as the output power of the driver.