Specifications: dwt: Scimagic-RC Product Model: SMG-239 Product material: ABS Size: 55*45*8mm Product weight: 40 g Number of channels: 4 Battery: 3V (CR2032 Include) Installation: wireless Code: rolling code and fixed code Corresponding frequency: 280-868MHz Frequency: 287MHz,433MHz, 433.42MHz, 434.42MHz, 433.92MHz, 868MHz, 868.3MHz, 310MHz, 315MHz, 330MHz, 390MHz, 410MHz, 287-868MHz etc. Radio transmission distance: 20-100m (Open area) Fashionable,Simple and elegant. 1 remote control can control up to 4 different brands of remote controls. Clone 4 identical frequencies at the same time. Clone 4 different frequencies at the same time. Clone 4 different brands at the same time. Clone 4 identical brands at the same time. Universal Garage Door Remote Control Compatible with 98% of remote control brands on the market. If you are not sure about compatibility, please feel free to contact me. It is compatible with all 433MHz fixed code and learning code remote controls. It is compatible with the rolling code remotes in the table below. Buy one get one free. You buy a remote control and give away a remote control clip. The remote control clip is worth 3USD. Easy to replace the battery. The remote control contains batteries. The battery is 1 piece CR2032. The battery is very easy to replace. Universal remote control Uses: garage doors, Gate Doors, motorcycles, car alarm products, home security products, short-range wireless remote control products, industrial control products, Alarm Systems etc. Include * Remote Control * Battery * Keychain * Clip * English Manual Easy to use This is a clone remote control, it needs to clone your original remote control face to face. If your remote control is a fixed code, after cloning, the new remote control will work. If your remote control is rolling code, after cloning, the new remote control needs to be programmed / activated on the receiver, the new remote control works. I will provide you with detailed instructions in the package, it is a card. Note The following remote controls cannot be cloned, please do not buy. HORMANN-BS-series 868MHz, ROPER-868MHz SCS-433MHz, AT-4, TO.GO VA MOTORLINE-433MHz PTX-5, TX55-868-4 ECA-433MHz, 893LM Unbranded rolling code If the remote control is cloning with your original remote control, the red light is fixed, it means that it cannot be cloned, please use our remote control to clone other remotes Warm Tips After receiving the remote control, if you don't know how to use it, please contact us first, because this is a multi-frequency remote control, which can be compatible with many brands, and the clone method of special brands is different, so when you can't use it, please leave us a message, We will send you a learning video or a manual in your local language. Communication is the best way to solve problems. If you have any questions, please feel free to contact me.