Linear GT-31 3-Channel Genie Compatible Key Ring Transmitter<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>GT-31 3-channel Genie Compatible Key Ring Transmitter</li><li>3 buttons and 3 channels to operate three independent gate， garage， and/or other access operations.</li><li>Test/operate LED. Black case color. Molded-in hole to accept keychain or keyring.</li><li>Anti-code-theft， rolling code technology. Quick-disconnect keyring supplied.</li><li>Codes: randomly selected from over 4 billion codes with each button press. Frequency: 390 MHz.</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41TdZTjfjeL.jpg" noproxy>