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 868.3 MHz with a black backside, designed to match the Marantec Digital 868.3 MHz remote. Note: It is not compatible with 433 MHz 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. Ideal for multiple garage setups. Color: As shown in picture Material: Plastic Package Contents: 2 x Garage door remotes Note: Only the items listed are included. Light reflection and differences in display screens may cause slight variations between the color of the item in the image and the actual product. Measurement may vary by +/- 1-3 cm.