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1·The meter adopts LCD display which makes display direct and complete and operation more easy and convenient with digital keyboard and revolving encoder.

该系列仪器采用LCD显示器，配合数字键盘与旋转编码器，使仪器显示直观，全面，操作更简单方便。

2·The key encoder input module has the advantages of that the configuration is simple, the cost is basically equal to the traditional keyboard, and the number of photocells used is small.

该键编码器输入模块具有结构简单、成本与传统键盘 基本相当、使用光电元件数量少的优点。