Page 198 - 3-1

android:layout_marginBottom="8dp"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:layout_marginTop="8dp"
android:onClick="Rssi"
android:text="Button"
app:layout_constraintBottom_toBottomOf="@+id/range"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.0" />

</android.support.constraint.ConstraintLayout>

- 198 -