Package Contents: you will receive 3 garage door opener remotes; Each M3-2312 2-button garage door remote for garage door openers comes for convenient use, the included programming instruction manual can help you operate them well; enough quantity to meet your use, replacement and sharing needs Compatibility: the M3-2312 garage door remote is for garage door openers and operates at 315MHz, compatible with bottle openers M4500, M4700, Q7500, Q7700, Q7900, M4500e, M4700e, M4900e, M4500ECO, M4700ECO, M50, M55, 260, 270, 370, bottle opener DC3700, DC3700e, DC2500, DC2500e, DC3700HD; Wide application range, strong signal transmission Programming Advantages: our garage door remote control can be quickly programmed and applied without using copy pins, and it is easy to carry; you only need to follow the instruction manual or our instructional video to program quickly and easily, each device allows you to operate up to 2 different garage door openers, the steps to complete your own code setup Safe and Reliable: new upgrades, the latest radio frequency technology and strong security encryption design a better working range, which can greatly reduce the receiving and transmitting range of radio wave interference signals, up to 100 feet, and advanced digital security prevents unauthorized access, extremely secure multi digit code is only compatible with garage door openers using the highest level of encryption at 315 MHz, giving you peace of mind Please Note: our remotes for garage door openers cannot be applied directly, they must be programmed with your old 315mhz remotes for to work properly Please note: Slight difference in kind and color difference, please don't mind, thank you ! Material: plastic colour: black Package Contents: 3 x garagedoor 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. garage door remote Remote for M3-2312 315MHz Garage Door Opener Remotes garage door opener remote