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. Ensures seamless operation with these specific models.Frequency Specific: This remote operates at a frequency of 868.3MHz with a black backside, ensuring compatibility with Marantec Digital 868.3 MHz remotes. Not compatible with 433MHz frequency models that have a light grey back.Dual Door Control: Each of the two buttons on the remote corresponds to an independent channel, allowing control of up to two garage doors separately. Provides a convenient solution for multiple garage setups.Color: As shown in photoMaterial: PlasticPackage Contents:2 x Garage door remotesNote: Light reflection and different displays may cause slight variations in color between the item and the image. Measurement may vary by +/- 1-3 cm.