Fangrui Product Details Upgrade For Marantec Garage Door Opener --- No Longer Needs Fer Pins: Just Place For The New Marantec Garage Door Remote On The Side Of Your For Marantec M3-2312 Opener; Follow The Instructions In The User Manual To Copy The Program To The New Remote Advanced Digital Security --- Extremely Secure Multi-bit Code Only Compatible With For Marantec Garage Door Openers Using 315 Mhz Frequency. Emits Strong, Secure Signals To Prevent Unauthorized Access As A Spare Remote For Garage Door Opener --- Each Remote Control Allows You To Control Up To 2 Different Remote Garage Door Openers; M3-2312 Remote Control Has An Ultra Long Working Range Of 148 Feet, Cr2032 Battery Included --- The M3-2312 (digital 382) Remote Is Compatible With For Marantec Keyless Entry Keypad, For Marantec M3-2312, M4500e, M4700e, Martin Dc3700, Dc2500 Garage Door Opener Models; Note : Please Confirm That For The Marantec Garage Door Remote Frequency Is 315mhz Before Purchasing, Otherwise The New Remote Will Not Work Sl Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Minnanxin