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. Not compatible with 433 MHz frequency models that have a light grey back. Dual Door Control: Each of the two buttons corresponds to an independent channel, allowing control of up to two garage doors separately. Ideal for multiple garage setups. Color: As shown in photo Material: Plastic Package Contents: 2 x Garage door remotes Note: Light reflection and different display settings may cause slight variations between the color in the image and the actual item. Measurement may vary by +/- 1-3 cm.