Please follow this Software Installation
Reference link :
https://pandapi3d.cn/bdsensor/installklipper
https://github.com/tomsbasement/twotrees-sk1
https://wiki.twotrees3d.com/en/3DPrinterSeries/SK1/Firmwarerefreshtutorial
and also don't forget to recalibrate the BDsenor after switch to different printer.
3, Test video: https://youtu.be/cOoGJNGE2v0