Just a security lock for protecting you and your family??s safety is not enough. Owning a remote control can make the using of security more convenient. This product use digital coding modulation technology￡? which has features such as strong anti-interference￡? stable performance￡? high reliability￡? no direction￡? etc. This is prefect product with long service time￡? low power consumption￡? high quality and competitive price. It won??t cause mutual interference. It features small and exquisite￡? easy to use. It can work perfectly in 60 meters. Safety comes first. Do not let such a good opportunity slip.                                    Features            New and high qualityCompact design and easy to operateUsed in garage door￡? barrier￡? lift gate￡? home appliances and other industrial remote areas2CH reliable controlLow power consumption                                                            Specifications            Frequency    315MHz    <br>Case Material    Plastic    <br>Size    5cm x 4cm approx    <br>Color    Black    <br>Weight    30g / 1.06oz    <br>                                                            Package Includes            1 x RF 315MHz Wireless Electric Garage Gate Door Remote                                                            Extra Info            How To Make This Remote Recognize With Your Exsiting Garage Door?1. Check the mHz of your existing receiver￡? and make sure they are in same mHz2. Check the back of the chip (IC) on your receiver￡? and see if the back of the IC has been set with particular pattern.3. when you receive this item￡? our chip (IC) has not been weld (as picture)￡? so if your receiver also not weld in particular pattern￡? they will able to learn automatically. If￡? however￡? your receiver has weld particular pattern￡? you may need a small metal welder and when you receive this item￡? you have to open the control and weld the same pattern to the control￡? then it will able to use.