1. 3-button Duplicator Remote Control: Our duplicator remote control adopts a single-chip microcontroller chip, which supports online programming and repeated burning. 433MHz remote control frequency. It is widely used and can be used in applications such as electric vehicle control, lighting control, smart home remote control, etc. 2. Convenient and fast: This door opener can easily clear codes and learn codes. Its user-friendly design ensures a worry-free experience and makes duplicating remote control signals fast and efficient. 3. Wide range of applications: The remote universal duplicator key can be used in a variety of fields, including electric vehicle remote control, lighting control, smart home automation, etc. Its versatility makes it a valuable tool for controlling different devices and systems. Use: Electric Door Wireless Communication: RF Overview: three-button (tri-frequency) duplicator remote control adopts a single-chip microcontroller chip, supports online programming, can be repeatedly programmed, and has a built-in EEPROM. This product is a multi-frequency remote control that supports 315MHz, 433MHz, and 410MHz remote control frequency copying. It can clear and learn codes at any time. It is convenient and fast to use. It can be used in electric vehicle remote controls, lighting control, smart home remote controls and other fields. Electrical parameters: Normal working voltage: DC2.4V-3V Transmitting current: 12mA Static current: Less than 0.15uA Transmitting power: 3-6dBm Working temperature: -20-70 Colour:Black Material:plastic Package Contents: 2 x Copy remote control Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.