No stable. Don’t waste your money.
These lights help my seeds germinate quickly in my mini green house. I have them set up on an indoor shelf with my favorite succulents. These lights are great to put under a shelf.
The unit i received is a little different than the unit pictured in that it has 126 leds rather than the 132 shown. With a light meter it's measuring full daylight sunlight. Love the timer options as well as on or off.
The prongs are too long and / or the receptacles too short. However they are unusable thanks to a single missing piece of plastic.