Feature: 1. One to one Copy:Press the button of the remote control that need to copy, the light flashes twice then turns off; put the remote control close to the copy one and press the same button, the copy remote control will flash 3 times then is always on,it means the code matching is successful. The other buttons also operate like this. 2. Clear Data: Press the first button and the second button of the copy remote control at the same time, the light flashes 3 times. One of the keys is pressed 3 times continuously and the other key keeps pressing, the light flashes continuously and all information clear. 3. One Button Clear Data:Press the first button and the second button of the copy remote control at the same time, the light flashes 3 times. Release one key and the other key keeps pressing. Press the key that needs to be clean twice, wait for 2S, the light flashes continuously and the information of the key clear. 4. Data Recovery:Press the third and fourth keys of the copy remote control simultaneously until the light flashes rapidly to restore the information of the last code. 5. Recovery Function:If you delete the useful codes accidently, you can press the 3rd \u0026 4th buttons at the same time until the LED light flashes quickly 3 times, then recover successfully. Specification: Features: One to one Copy:Press the button of the remote control that need to copy, the light flashes twice then turns off; put the remote control close to the copy one and press the same button, the copy remote control will flash 3 times then is always on,it means the code matching is successful. The other buttons also operate like this. Clear Data:Press the first button and the second button of the copy remote control at the same time, the light flashes 3 times. One of the keys is pressed 3 times continuously and the other key keeps pressing, the light flashes continuously and all information clear. One Button Clear Data:Press the first button and the second button of the copy remote control at the same time, the light flashes 3 times. Release one key and the other key keeps pressing. Press the key that needs to be clean twice, wait for 2S, the light flashes continuously and the information of the key clear. Data Recovery:Press the third and fourth keys of the copy remote control simultaneously until the light flashes rapidly to restore the information of the last code. Recovery Function:If you delete the useful codes accidently, you can press the 3rd & 4th buttons at the same time until the LED light flashes quickly 3 times, then recover successfully. Specifications: Color: Black Material: Plastic Operating Voltage：12V Current：≤12mA Remote Control Range: 100M Frequency Deviation：±0.2MHz Transmission Rate：50-60KHZ Package Weight: 105g Package Size: 11.74 * 6 *1.35cm Package List: 4 * Remote Control Key Fob Package List: 4 * Remote Control Key Fob