A. Compatibility This garage door remote control is suitable for models such as MCHS43 - 2, MTR43 - 2, MNHS433 - 02; it is compatible with NOVOTRON 502 MAX43 - 2, 512 MIX 43 - 2; and it is suitable for MINI - 524, MINI style 524, 522, 522 style, 524 style. B. Dual Channels This garage door remote control has two channels of 433.92 MHz, which can control the access automation system. C. Type White buttons D. Color Black E. Material Plastic F. Package Contents - 2 garage door openers Only the above package contents are included, and no other products are included. G. Notes Light reflection and different displays may cause the color of the items in the picture to differ slightly from the actual product. The allowable measurement error is plus or minus 1 - 3 centimeters.