[ Replacement ] The M3-2312 2-key garage door remote control is a replacement part for the Marantec garage bottle opener. The M3-2312 garage door remote control can be programmed with a 315 MHz Marantec garage door bottle opener. [Compatible] The M3-2312 Garage Door Remote Controller Compatible with Marantec Martin Garage Door Openers work with 315MHz frequency. Compatible with Marantec Openers M4500, M4700, Q7500, Q7700, Q7900, M4500e, M4700e, M4900e, M4500ECO, M4700ECO, M50, M55, Synergy 260, 270, 370; Martin openers DC3700, DC3700e, DC2500, DC2500e, DC3700HD. Works with Security technology to secure signals to minimize interference and improve the 2-Button Remote Control overall performance. After upgrading, the 2-button remote control is cost-effective and cost-effective. The latest Intelli Code technology is used to reduce radio interference, LED control buttons, 3V lithium battery, and sun visor clips. Easy programming: The 2-button digital remote control is easy to program. The software package includes a 2-button remote control, a 3V lithium battery, and programming instructions, making it easy to program and install. Please refer to the manual for the program to easily fer code from the existing garage door remote control. Colour:black Material:plastic Package Contents: 1 x garage door opener 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.