https://youtu.be/PzO4Ak5tVuY
Be advised all protection devices are not the same. The cost is not a deciding factor. This is one area where you get what you pay for. With that said anything is better than nothing. The one I installed is not a DIY and one reason is because of the warranty that it has. Also, what is inside the box. Not the same as most units. You will learn from the video. Best of luck!