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 . NOTE: Please that your receiver function is working properly before purchasing, because this product needs to be matched with your receiver first. 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. Frequency:433mhz Code:Rolling code Buttons:4 Battery:Include Battery Distance:50m-100m Scope of application:garage door, alarm, automatic door, rolling door, etc Weight:0.027(kg) Size:6.8x4.0x0.9(cm) Colour:Black Material:ABS Package Contents: 1 * Remote Control 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. Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours Hope you have a pleasant shopping experience!