Excellent product, I bought 3 and set them up immediately! Very high quality, no comparison to other fake ones that you step on and don't work.

I had 2 identical ones that accompanied the alarm. In about 10 years, I needed to purchase an additional 3. It is a reliable product that every time it needs replacement, you pay for it at a higher price. I hope next time I won't have to pay double the price for it.