Skylink GBRK Smart Button Keyless Entry System One Step Installation - Simply replaces or parallels your traditional wall button with Smart Button. Includes EasyClip for easy installation Smart Button receives signal from keypad and opens / closes garage door Smart Button works with up to 15 remote controls, additional controls can be purchased separately including G6M, G6V, G6K, G6T4 After connecting this NEW Remote Control to your wall button, your existing remote control will still work with this connection Rolling Code Technology