Enhanced Compatibility: This replacement transmitter is compatible with a wide range of models including D302-868, D304-868, D222-868, D313-868, D321-868, D323-868, D382-868, D384-868, and D392-868, ensuring 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 Digital 868.3 MHz remotes. 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 a separate channel, allowing independent control of up to two garage doors. This feature provides convenient operation for multiple garage setups. Please note that product appearance and printed text may vary slightly between batches, but this does not affect functionality. Color: As shown. Material: Plastic. Package Contents: 3 x Garage door remotes. Only the items listed are included; other products are not included. Note: Lighting and display settings may cause slight color variations between the image and the actual item. Measurement may vary by +/- 1-3 cm.