It is a Chinese knock off mirroring same tech in name brand way over priced lights. Quality is there. Works well. Only problem there is no off switch, that is why you need a timer

Some leds are not working and I'm disappointed.

Just picked this up to replace my Vivosun VS1000 light that came with the grow tent kit. I immediately noticed a HUGE increase in brightness in my tent after installing these! The center mounted fan is quiet and seems to be fairly gentle in force but that's pretty subjective.

A word of warning for others performing a similar upgrade as I did - When my hub turned off my lights for the day I noticed that the red LEDs of the light were still on. After some investigation I discovered that I was using the wrong cable. The cable you use to connect the VS1000 to the grow hub will fit, but the light will not function properly. Make sure you use the cable that comes with it!

One of my hydroponic growing systems is a tower-style setup and did not come with its own grow light so I bought this lamp to use with it. It is pretty much a perfect size for my purposes and I am very pleased with the quality and ease-of-use of this lamp. I tested the timer by setting it to 4 hours and it turned off and back on again 20 hours later, just as it should. I like this lamp and feel that it is a good deal although, to be honest, I did not shop around at all.