1.Compatibility -- This 433.92MHz remote control can copy 99% fixed code or learning code, but can not copy rolling code. The supported chip codes are listed on the product picture or product description. 2.Latest RF Technology -- A radio remote control transmits and controls signals through radio waves. Non-directionality and long transmission distance. The latest RF technology ensures better transmission range. 3.Safe and Reliable -- The shell is made of ABS and metal materials, which are safe and reliable to use. ABS has high impact resistance, it is waterproof and wear-resistant. The metal material is sturdy and durable. 4.Small and Lightweight -- Remote control size: 35*15*66mm. Net weight: 32g. The remote control fits into a backpack, purse, pocket or can be worn around the waist. It comes with a key ring for easy carrying. 5.Easy to Use -- The programming instruction manual contains the operation steps for erasing, copying and restoring the code. The manual is easy to follow and use. You don't have to worry about too complicated procedures.