NOTE: Please that your receiver function is working properly before purchasing, because this product needs to be matched with your receiver first. 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 . 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., Manufacturer: I750208305