It is recommended that when using this motor, check the version number of the matching door machine inverter. Version 1.17 can be used normally. When it is lower than version 1.17 (for example, the old version 1.13 is more common), it will cause the motor to open and close the door failure after working for a long time (this cannot be avoided by domestic or imported motors), and the door machine inverter version needs to be upgraded to resolve it. . We provide upgrade services.