The cooling fan's air passes through the area needing to be cooled. Has just enough power for 1-2 small to medium sized plants from seed to harvest. Works really well in my 3'x6' greenhouse.
Thumbs up. The timer is a must have. Fully adjustable brightness is great.
The * are very strong, but even with the terrible arthritis in both hands, i was able clamp the lights onto my bakers rack shelves. The timer is a life saver. I like that they have timers on them and the different levels of brightness.
The clamp is tight and holds really well. The clip is soft on the inside, so it doesn't damage what you’re clipping it to. I have this clipped to my plant stand and it works so well!
Every time the lights lose power and regain power they have to be manually turned on again via the power button on the controller. They're super dim and the highest brightness level is like a toy flashlight.
Product photos imply this item is much bigger than it is. I'd love it otherwise, but i can't over look this crucial flaw. Terrible customer service also. Fine something else.