# 安装

## 安装注意 <a href="#installation-notes" id="installation-notes"></a>

* **主机**：元器件面必须朝上，否则影响陀螺仪的使用。
* **主显示模块**：可任意方向安装，建议安装方向为按钮朝上或朝下。不戴偏光太阳镜时，四个方向的显示效果一致。戴偏光太阳镜时，按钮朝上或朝下时可看清，朝左或朝右时无法看清。
* **副显示模块**：只能横向安装。但戴偏光太阳镜时均无法看清。
* **GPS 模块**：GPS 模块的摆放位置需尽量空旷无遮挡。建议放置于前档玻璃下方。
* **按钮**：按钮为点动式。可根据自己的需要以并联方式外接任意数量的点动式按钮。


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