The Community Controls Emperor line of remotes offers the traditional visor size remote with the long lasting 9 Volt battery. The Community Controls Emperor comes in 2 models The Emporer 300 and 310. The Emperor 300 is compatible with any 10 dip-switch 300MHz receiver. The Emperor 310 is compatible with 8 dip-switch 310 MHz receivers. They are 100% compatible with the Multicode® and Linear® brands of remotes.  Charge Guard®  an optional feature for the Emperor has a 3 color LED indicator for battery voltage. When the battery is fully charged the LED glows Green, as it gets weaker it glows Yellow and finally it will glow Red as an indicator to replace the battery. If you have any questions or comments please feel free to leave your feedback.