GEM 2-button Old Style Transmitter is compatible with remotes that were made before 2006. The GEM Remotes 2 Button Old Style Transmitter is for older remotes. For systems made after 2006, you will need to check out the GEM 3-Button Transmitter.
The transmitter has a dedicated learning button, which can be easily programmed to the GEM remote control. It operates on radio frequency and has the ability to float if it falls into the water. To stop your lift, press both buttons at the same time. You can also stop the lift by pressing one button right after the other.