Upgraded Garage Door Opener Remote,Compatible with Marantec,M4700E, Martin DC3700, DC2500,M3-2312 315Mhz 2-Button Garage Door Openers Duplicator with Shade Clip(Can'T Program). Compatible Models： Compatible with marantec garage door openers models: M4700e, M4900e, M4700ECO, M50, M55, Synergy Solo, Synergy 260, Synergy 270, Synergy 280, Synergy 360, Synergy 370 and Synergy 380 Marantec openers (check the opener and confirm it has a 315MHz frequency radio receiver to be compatible).
eBay