Compatibility -- This 433.92MHz remote can copy 99% fixed code or learning code, but cannot copy rolling code. Supported chip codes are shown on the product photo or in the product description. Latest RF Technology -- A radio remote control transmits and controls signals through radio waves. Non-directionality and long transmission distance. The latest RF technology guarantees a better transmission range. Safe and Reliable -- The shell is made of ABS and metal materials, which are safe and reliable to use. ABS has high impact resistance, waterproof and wear resistant. The metal material is sturdy and durable. Small and Light -- Remote control size: 35*15*66 mm. Net weight: 32g. The remote fits in a backpack, purse, pocket or can be worn around the waist. It comes with a keychain for easy transport. Easy to Use -- The programming instruction manual contains the operation steps to erase, copy and restore the code. The manual is easy to follow and use. You don't have to worry about overly complicated procedures.