# 1.7.2按鈕

在螢幕下方共有四個按鈕，所對應的功能顯示在螢幕的下緣： 

由左至右順序來看：

 按鈕一： 

● 切換介面 

● 回到上一層（進入多層數介面）

按鈕二： 

● 當顯示“<”時：回到上一個選項或介面；&#x20;

在輸入介面時為移動選項。&#x20;

● 當顯示“+”時：編輯數字。

![](/files/-LrCquu4oaevwVbUnDoF)

![](/files/-LrCqxaZrEx2ETx7WLyo)

按鈕三：&#x20;

● 切選擇下一個選單或介面&#x20;

● 編輯數字時，跳向下一位數

按鈕四：&#x20;

● 當顯示“ENT”時：按下表示Enter進入所選選單。&#x20;

● 當顯示“Set”時：按下設定所輸入的內容。&#x20;

● 當顯示“Pause”時：按下會暫停量測， 紅燈閃爍。&#x20;

● 當顯示“Start”時：按下會繼續量測，解除Pause狀態。

![](/files/-LrDZomOlQgl25A-DGxS)

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