The first one didn't work from the start and I returned it to Amazon.Com. The second one drained the batteries in a matter of days. I returned that one...The replacement had the same problems. The fourth one worked a little better. I kept replacing the batteries every month or two. I just replaced all three batteries and it doesn't work at all. It is not worth all the hassle. The product has some serious design flaws. It should be taken off the market until the problems are corrected.