Enhanced Compatibility: This replacement transmitter is compatible with a wide range of Marantec models including D302-868, D304-868, D222-868, D313-868, D321-868, D323-868, D382-868, D384-868, and D392-868. Ensure seamless operation with these specific models. Frequency Specific: This remote operates at a frequency of 868.3 MHz with a black backside, ensuring compatibility with Marantec Digital 868.3 MHz remotes. Note: It is not compatible with 433 MHz models, which have a light grey back. Dual Door Control: Each of the two buttons on the remote corresponds to an independent channel, allowing separate control of up to two garage doors. This feature provides convenience for homes with multiple garage doors. Color: As Shown in Picture Material: Plastic Package Contents: 2 x Garage Door Remotes Note: Only the items listed above are included. Other products are not included. Due to lighting and display differences, the actual color may vary slightly from the image. Measurement may vary by +/- 1-3 cm.