Multi-functional and multi-variable, and user-friendly simple design and fast to use. This smart copy remote control is suitable for electric door remote control, telescopic door remote control, garage door remote control. Different chip manufacturers have different prefixes chip model, as long as the digital portion of the chip can be the same model. Note: We usually do not recommend copying a rolling code chip, because there are many uncertainties when copying a rolling code chip. When copying a rolling code chip remote control, it is not possible to determine whether the remote control chip is an encryption chip. Material: ABS Size: 60*36*12mm. Color: Black Style: Alphabet style Type: Wireless remote. For: Such as electric telescopic door remote control, road gate remote control, alarm remote control and so on. Rated voltage: 12V Battery(included). Wireless transmission distance: 50-150 (m). (open space) Package Contents: 4 * Electric Garage Door Key Only the above package content, other products are not included. Note: Light shooting 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.