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, D392-868, ensuring seamless operation with these specific models. Frequency Specific: This remote operates at a frequency of 868.3MHz with a black backside, ensuring compatibility with Digital 868.3 MHz remotes. Note: It is not compatible with 433MHz frequency models that have a light grey back. Dual Door Control: Each of the two buttons on the remote corresponds to a channel, allowing you to control up to two garage doors separately. This feature provides a convenient solution for multiple garage setups. Color: As Shown in Picture Material: Plastic Package Contents: 2 x Garage Door Remote Note: Light reflection and different displays may cause the color of the item in the picture to differ slightly from the actual product. Measurement allowance is +/- 1-3cm.