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  • Overall Rating: 5
  • Price: 5
  • Quality: 3
  • Ease Of Use: 5
  • Usefulness: 4
This review has numerical results. – 5W 450lm 3500K Warm White LED Ceiling Down Light w/ LED Driver - Silver Reviews

posted by Stubi on 03/06/2013 Certified Owner

Involvement:Expert (understands the inner workings) - Ownership:1 week to 1 month

-Cheap like everything on DX. -The total power of the LEDs in the lamp is actually 5 W. Surprisingly the item description is correct from this aspect.
-Mechanical parts have less than poor quality. -After receiving the lamp, disassemble it and apply enough heat transfer gel between the heat sink-reflector and the reflector-PCB surfaces!
LED: There are 10 pcs of 0.5 W SMD LED in the lamp soldered onto an Al core PCB. Check my pics. The PCB board of the LEDs warms up to 57 C° after 1 hour of operation. Heat sink: Made of aluminum. Warms up to 44 C° after 1 hour of operation on free air with 24 C° environmental temperature. Power supply: The high-frequency transformer is the hottest point, it heats up to 52C° after 1 hour of operation. The size and the design of the PCB seems to be appropriate to drive a 5 W LED. Check my pics.
LED power is as advertised. Light amount is definitely less than 450 lm. Color temperature is around 3500 K as advertised.


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