[ Easy Programming ]: The M3-2312 garage door remote control comes with a wireless scrolling code, making it very easy to program. The M3-2312 programming connector can be used with the external receiver keyless entry keyboard. Including minimal programming operations and detailed installation instructions. [ Digital Security ]: The M3-2312 garage door remote control uses multi bit technology and LED control buttons to verify that it is only compatible with . and Garage Door openers use a frequency of 315MHz to that the signal minimizes interference and improves overall performance. M55, 260, 270 are compatible with DC3700, DC2500, and DC3700HD bottle openers. [ Superior Design ]: M3-2312 Garage Door Remote Control, dual frequency, dual manufacturer design that can operate 1 or 2 garage doors, with sun visor clip, keyring attachment, 1 3V lithium battery, and sun visor that can be directly installed in cars with M3-2312 garage door remote control, don't worry about forgetting to bring the remote control! [Wide application scope]: M3-2312 garage door remote control and some M-Line M4500, M4700 and Q-Line Q7500, Q7700, Q7900 models, and all M4500E, M4700E, M4900E, M4500ECO, M4700ECO, M55, 260 compatible Essence 270 is compatible with DC3700, DC2500 and DC3700HD remote control models. Colour:black Material:plastic Package Contents: 2 x gate openers Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.