diff --git a/mpmaster/src/main/java/com/xypower/mpmaster/MainActivity.java b/mpmaster/src/main/java/com/xypower/mpmaster/MainActivity.java
index 9c596e9c..c7d78cb0 100644
--- a/mpmaster/src/main/java/com/xypower/mpmaster/MainActivity.java
+++ b/mpmaster/src/main/java/com/xypower/mpmaster/MainActivity.java
@@ -89,6 +89,13 @@ public class MainActivity extends AppCompatActivity {
             }
         });
 
+        findViewById(R.id.nrsec).setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                SysApi.setSpiPowerOn(true);
+            }
+        });
+
         findViewById(R.id.btnTurnAppOn).setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
diff --git a/mpmaster/src/main/res/layout/activity_main.xml b/mpmaster/src/main/res/layout/activity_main.xml
index b9e5b13b..601bfd40 100644
--- a/mpmaster/src/main/res/layout/activity_main.xml
+++ b/mpmaster/src/main/res/layout/activity_main.xml
@@ -101,4 +101,13 @@
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toBottomOf="@+id/btnTurn485On" />
 
+    <Button
+        android:id="@+id/nrsec"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="12dp"
+        android:text="NRSEC"
+        app:layout_constraintStart_toEndOf="@+id/sendsms"
+        app:layout_constraintTop_toTopOf="@+id/sendsms" />
+
 </androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file