Replacement Remote Control: Specifically designed for garage door models, this remote operates at a frequency of 433.92MHz. It is compatible with RSE2-433, RSC2-433, RSZ1-433, and several other models, ensuring wide-ranging use. Comprehensive Compatibility List: This remote is suitable for Liftronic 500/700/800 and Portronic D2500/D5000/S4000 garage door operators. It seamlessly replaces your lost or damaged remotes with identical functionality. Exclusion Details: 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. Verify your model is compatible before purchase to avoid any inconvenience. (The actual product may have slight color difference, which does not affect the use) Color: Grey Material: Plastic Package Contents: 2 x Garage Door Opener Remote Only the above package content is included; other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to appear slightly different from the real thing. The measurement allowed error is +/- 1-3cm.