Review on Firefly Allstar Keychain Compatible Better by Ryan Person

Fits Mighty Mule Gate Opener. I saw this opener mentioned that it would work with Mighty Mule so I bought it because it's about half the price of the Mighty Mule Opener. Seems to be better quality with a larger battery in a slightly smaller design. Programming was easy. I opened up both this and my current MM opener and set the Firefly switches to the same as the Mighty Mule. I found it useful to use the tip of a ballpoint pen to move the switches as they are tiny. Each switch (there are 10 of them) has 3 positions, so make sure you move them to the right place. My first attempt at programming it didn't work, so I checked the switches and found that one of them was in the middle position, not all the way up or all the way down. I plan to buy a few more for other cars.