A remote control can control up to 4 different codes and is self-programmable Compatible with most remote controls (such as Faac, Came, Nice...), frequency 433.92 MHz, fixed code Simple and modern design Battery not included (27 A 12 V), replaceable without loss of stored codes Note: this product does not contain Instructions The remote control is extremely compact and made of sturdy ABS plastic and aluminum. It has a clean, modern design and features sliding key protection to prevent accidental pressing. Battery not supplied (27 A - 12 V), replaceable without loss of recorded codes. This item is sold without description. But it's simple to use: to program a remote, simply hold it in front of the remote you want to copy, about half a centimeter away. Simultaneously press the Copy button on the original remote control and the Program button on the new remote control (A or B). After approximately 3 seconds, the LED light will begin to flash regularly. Then release the button. Repeat the same steps to program the other buttons on the remote. To clear existing memory, simply press buttons A and B on the remote control at the same time until the LED light starts flashing regularly. Then release the button. In this way, 2 memories will be deleted. The dimensions are approximately 53 32.6 mm Operating voltage: DC12V. Operating current: 8 mA Transmission power : +13 dBm Remote control distance: 100 M in open space (open space); Frequency deviation: 0.2 MHz; Transmission rate: 50-60 KHZ;