1. REPLACEMENT FOR GARAGE REMOTE CONTROL: Specifically designed for models including RSC2-433, RSZ1-433, RSE2-433, RSE4-433, RS2-433, RS4-433, RSN2-433, RSM4-433, this remote operates at a frequency of 433.92MHz, ensuring seamless functionality with your existing garage door system. 2. COMPATIBILITY LIST: This remote control is fully compatible with Liftronic 500, 700, 800, and Portronic D2500, D5000, S4000 garage door operators. It's tailored to seamlessly integrate with these specific models, providing you with reliable and efficient operation. 3. INCOMPATIBILITY INFORMATION: Please note that this remote is NOT compatible with BS Series (RSC4-433-BS, RSZ1-433-BS) AND Liftronic 700 Series 2, Liftronic 800 Series 2. For any compatibility queries, our customer service is ready to assist you to a perfect match. 4. DESIGN AND DURABILITY: Featuring a robust metal base and a practical opening at the bottom, this remote control is designed for and convenience. It's ideal for attaching to your keychain, ensuring it's always handy when you need it. 5. Colour: black 6. Material: plastic 7. Due to different batches, there may be differences in product appearance and printed text, which not affect use. 8. Package Contents: 2 * Garage Door Remote Control. Only the above package content, other products are not included. 9. 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.