<p>This product is a wireless remote control key, remote control equipment such as rolling shutter door and garage door within 50m-100m(free space). Bring you a new remote control experience, bring more convenience to your .</p> <p>NOTE: Please that your receiver function is working properly before purchasing, because this product needs to be matched with your receiver first.</p> <p>Disclaimer: Your remote control must be consistent with the picture described by us, and your remote control and model must be in the compatibility list of the store.</p> <p>Frequency:433mhz</p> <p>Code:Rolling code</p> <p>Buttons:4</p> <p>Battery:Include Battery</p> <p>Distance:50m-100m</p> <p>Scope of application:garage door, alarm, automatic door, rolling door, etc</p> <p>Weight:0.027(kg)</p> <p>Size:6.8x4.0x0.9(cm)</p> <p>Colour:Black</p> <p>Material:ABS</p> <p>Package Contents:</p> <p>1 * Remote Control</p> <p>Only the above package content, other products are not included.</p> <p>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.</p>