Compatibility - This garage door remote control is compatible for MCHS43-2, MTR43-2, MNHS433-02, for NOVOTRON 502 MAX43-2, 512 MIX 43-2, for MINI-, 524, for MINI- Design, 524 522, 522Design, 524 design. 2 Channels - The garage door remote control has 2 channels at 433.92 MHz for effective control of gate automation. Type:White key Colour:Black Material:Plastic Package Contents: 2 x Garage Door Opener Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.