diff --git a/App/Button.cpp b/App/Button.cpp
index 881d504c..013f893e 100644
--- a/App/Button.cpp
+++ b/App/Button.cpp
@@ -22,7 +22,7 @@ void Button::Set(Pin key, Pin led, Pin relay)
 void Button::Set(Pin key, Pin led, bool ledInvert, Pin relay, bool relayInvert)
 {
 	Key.Set(key);
-	Key.Press.Bind(&Button::OnPress, this);
+	Key.Press.Bind(&Button::OnKeyPress, this);
 	Key.UsePress();
 	Key.Open();
 
@@ -49,6 +49,11 @@ void Button::OnPress(InputPort& port, bool down)
 	}
 }
 
+void Button::OnKeyPress(Button& btn, InputPort& port, bool down)
+{
+	btn.OnPress(port, down);
+}
+
 bool Button::GetValue() { return _Value; }
 
 int Button::OnWrite(byte data)
diff --git a/App/Button.h b/App/Button.h
index c4f24da2..4a5e143a 100644
--- a/App/Button.h
+++ b/App/Button.h
@@ -36,10 +36,11 @@ public:
 
 	String ToString() const;
 
-private:
+protected:
 	bool _Value; // 状态
 
 	virtual void OnPress(InputPort& port, bool down);
+	static void OnKeyPress(Button& btn, InputPort& port, bool down);
 };
 
 #endif