One 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 include instructions. The remote control is extremely compact and made of robust ABS plastic and aluminum. It has an elegant and modern design and features a sliding keyboard cover to prevent accidental pressing. Battery not included (27 A - 12 V), replaceable without loss of stored codes. This item is sold without a description. But it is easy to use: to program a remote control, simply hold it in front of the remote control you want to copy, about half a centimeter away. Press the Copy button on the original remote control and the Program button on the new remote control (A or B) simultaneously. After about 3 seconds, the LED indicator will start flashing regularly. Then release the button. Repeat the same steps to program the other buttons on the remote control. To clear the existing memory, simply press the A and B buttons on the remote control simultaneously until the LED indicator starts flashing regularly. Then release the button. In this way, 2 memories are erased. The dimensions are approximately 53 × 32.6 mm. Working voltage: DC12 V. Working current: ≤8 mA. Transmitting power: +13 dBm. Remote control distance: 100 M in open space (open space); Frequency deviation: ±0.2 MHz; Transmission speed: 50-60 KHZ;