Alternative to garage remote control: This remote control is specifically designed for the Hormann Ecostar model and includes rsc2-433rsz1-433rse2-433rsv4-433rs2-433rs4-433rss2-433rs44-433 The working frequency is 433.92MHz, ensuring seamless connection with the existing garage door system. Compatibility List: This remote control is fully compatible with Hormann Liftronic 500, 700, 800 and Portronic D2500, D5000, S4000 garage door operators. It is customized for seamless integration with these specific models, providing you with reliable and efficient operation. Incompatibility information: Please note that this remote control is not compatible with the Ecostar BS series (rsc4-433-bs, rsz1-433-bs) and the Liftronic 700 series 2, Liftronics 800 series 2. For any compatibility issues, our customer service is always ready to assist you in ensuring product compatibility. Design and Durability: This remote control features a sturdy metal base and practical bottom opening, with a long designed lifespan and easy to use. It is very suitable for connecting to keychains, ensuring ease of use at all times when needed. Color: Black Material: Plastic Due to different batches, the appearance and printed text of the product may vary, which will not affect its use Packaging content: 2 * Garage door remote control Only includes the above packaging content, other products are not included. Attention: Light reflection and different displays may cause slight color differences between the items in the picture and the actual product. The allowable measurement error is+/-1-3cm.