Initial configuration for A16v3

[admin]

solution-A:
1. use by this switch panel: https://www.kincony.com/metal-frame-mome...panel.html
2. add logical convert module: https://www.kincony.com/logic-level-converter.html

solution-B:
1. use by this switch panel: https://www.kincony.com/metal-frame-mome...panel.html
2. RS485 io module: https://www.kincony.com/rs485-io-module.html