Description/Features: Specifications: Working voltage: 12 V 23A Working current: ≤ 12mA Working frequency: 27-40.685MHz Transmission power: ≥ 10mW Launch distance: 100 meters (open) Working temperature: -20 ℃~70 ℃ Storage temperature: -10 ℃~50 ℃ Humidity: below 85% Note:Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Not Affect The Use How to clone ? 1) and retain pressing Button 1 and at the same time 4 times Button 2 2) Release both buttons. So LED emit a quick flash every 2 secs. 3) Place the original remote control on the opposite of (see Figure .). 4) and retain the button to copy the original remote control and wait until the LED of changes the way to flash (faster), it means that the code has been learnt. This may take a few seconds. 5) While the LED flashes, button where you want to store the code just copied, until the LED switches off Material: ABS Color as shown Package Contents: 1 x Garage Door Remote Control 1 x Hanging rope 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.