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 provides a convenient solution for multiple garage setups. Color: As Shown in Picture 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 slight variations in the color of the item in the picture compared to the actual product. Measurement may vary by +/- 1-3 cm.