For this library to work bluepy has to be installed. Be sure to run
$ pip install -r requirements.txt
before using the library.
Protocol is based on https://github.com/NiceLabs/atorch-console/blob/master/docs/protocol-design.md But command codes and reply differs as described at https://sigrok.org/wiki/RDTech_UM_series
App: http://files.banggood.com/2018/05/Android-APP.apk Manual: https://files.banggood.com/2018/05/A3&A3-B.pdf