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 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. This feature provides convenience for multiple garage setups. Color: Photo Color Material: Plastic Package Contents: 2 x Garage door remotes. Only the items listed are included; other products are not included. Note: Light reflection and different display settings may cause the color of the item in the image to appear slightly different from the actual product. Measurement may vary by +/- 1-3 cm.