resource: 1. Easy to use, 4 channel remote control system allows you to control your gadgets, car, home and garage. 2. This is not a complete list If your remote uses the 433 MHz frequency, it will work with the remote duplicator (note: the rotary coded remote will not work). 3. The original remote control IC model is 2262 2260 1527 2240 compatible IC. 4. The battery used by the product is 27A 12V. Replace the battery when the remote control distance is insufficient. 5. Clone up to 4 remote control signals from 4 different remotes. instruction: With this remote you can control all 433 MHz fixed combination keyrings. Some remotes that use this frequency are listed below. 4-channel RF wireless remote control duplicator for cars, garage doors, gates, alarm systems, etc. This is a fixed frequency (433 MHz) remote cloner for duplicating common fixed and learned code remotes. Specification: Model: HFY408G Size: 55x28x14 black Battery: 60mAh Operating frequency: 433 MHz Powered by 27A 12V battery (included) Package Included: 1 remote Notice: 1. Due to the difference of different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures. 2. Please allow 1-3cm deviation due to manual measurement and different measurement methods. Thanks includes: 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.