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. 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 a separate channel, allowing independent control of up to two garage doors. This provides convenient operation for multiple garage setups. Color: As shown in photo Material: Plastic Package Contents: 2 x Garage door remotes Note: Only the items listed above 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 up to +/- 1-3 cm.