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 convenience for homes with multiple garage doors. Color: As Shown in Picture Material: Plastic Package Contents: 2 x Garage Door Remotes (other items not included) Note: Lighting and display differences may cause slight color variations between the image and the actual item. Measurement may vary by +/- 1-3 cm.