Review on Firefly Allstar Keychain Compatible Better by Mike Castro

318MHz transmitter with DIP switch. Worked great for my 318mhz gate opener. Just no way 318 MXZOK, the second review. I have bought more Firefly bottle openers. The new ones work just as well as the old ones. They have a different shape and color than the ones shown. New black. The only issue I've had and not sure if it's an issue is that one unit had a very low range. Like I have to be within 5 feet for it to work. I took out the 12v battery and there is 10v. Replaced and all is good. Remember that the opener was several months old and on the tractor the gate was opened once a day. In any case, I wouldn't downvote the rating because of the low battery, but that was the only issue I had. For the price, good value.