Worked great...

Not much to say about a ballast but they work perfectly.

I keep a couple of cactus alive over the winter on a bookshelf with a grow light. Over three or four years I’ve tried several, but this is the first one that I really like, for several reasons:
1. Solid construction. This thing is built like a tank.
2. I can mount it to the bottom of a shelf with a couple of binder clips, zip ties, and a broom handle through the included bails.
3. The included (detachable) cord comes out of the unit in such a way that I can route power without an unsightly loop of cord
4. The side switch and adjustable intensity are easy to find and operate blind.
5. I can buy more of these & Daisy chain them together, and control all of them from a knob on one unit. If the knob wears out in the future, I can switch units around and make a different one the master.
6. It’s the right size for Lundia shelving and it looks good enough to use in the living area of my house.
I’m planning to buy a two-pack of these & get some herbs going.

Wow I’m very impressed with this one! I wasn’t expecting my plants reaction so quickly , but three days later ..notice a mind blowing 🤯difference ! Definitely easier hanging it up and much cooler indeed! I can turn this LED panel up 🆙 💯 percent , verses the old 1000w heavyweight hps hood that was never turned up all way because of heating issues. Gonna order a second one very shortly! Thanks I power !

Very nice plant light will be buying more