【Perfect Replacement】:M3-2312 (digital 382) garage door remote control, can replace M3-2314 (384) ML-1312V, ML-2312, M3-3313 and other 315MHZ remote control, compatible with Marantec garage door opener (Tip:M3-2312 garage door opener remote control only works by copying the code of an existing remote control that is normally connected to the opener and cannot be programmed directly to the garage door opener.) 【Digital Security】: M3-2312 garage door remote control uses unique multi-bit technology and LED control buttons to ensure that it is only compatible with Marantec and Martin garage door openers that use the 315MHz frequency, thus ensuring signal security, minimising interference and improving overall performance. (Hint: our remote control cannot be connected directly to the opener, you need to duplicate the work of the old remote control) 【Wide Range Of Applications】: M3-2312 garage door remote control is compatible with M4500, M4700,M4500e, M4700e,M4900e,M4500ECO,M4700ECO,M50,M55,Q7500,Q7700,Q7900 Synergy 260,Synergy 270 Compatible Martin DC3700,DC2500,DC3700HD Garage Door Opener (Note: remotes are not directly compatible with connecting to a garage door opener and will only work by copying the old remote in use) 【Easy Programming】:M3-2312 garage door remote control, easy to copy the code on your existing remote control to work, no need to use the copying needle, you just need to follow the instructions in the manual, follow the steps to quickly set up the code (Note: Before purchasing the remote control, please make sure that there is a functioning old remote control available for programming and copying, such as if there is no remote control can not be used properly) 【After-Sales Service】:Please rest assured to buy M3-2312 Garage Door Remote Controller, if you have any quality problems during the use of M3-2312 Garage Door Remote Controller, please contact us in time, we will provide you with unconditional refunds or exchanges, even if it is past the after-sales service time stipulated by Amazon, we will still provide you with 12 hours of online service, and we are 100% responsible for the products that you have purchased! Note: Our M3-2312 (382) garage door remote control works by copying your existing old remote control and cannot be directly connected to the garage door opener. Our M3-2312 (382) garage door remote control works by copying your existing old programmed remote control and cannot be programmed via the programming pins. If you do not have a usable remote control, you will not be able to use it. (Note: You must have a functional remote control for cloning; otherwise, the remote control will not be compatible for use) M3-2312 (382) Garage Door Remote Control,Compatible with Marantec M4500,M4700,Synergy 260,Synergy 270 Garage Door Openers(Copying Old Remote Works,Cannot be Directly Compatible Connected to Opener)