I’ve had my DIY burglar alarm hooked up for several months now and could not be happier. The product is a great offer if you want something. I’m probably going to run a black sharpie over the label so it will not look as obvious it’s an alarm, and ideally the burglar will not go right to it. The only real guidance I’d give is that if you do begin using these on your door, that you perhaps put it at the end of the door instead of the top right where your guest’s heads will be once they come or go. It works and worth it. I realized that there is some controversy over the loudness of the alarm in the past critiques. I’d state that 99 out of 100 times the machine is going to do its job at deterring crime. I’ve had this for around fourteen days now and they work fantastic! On top of that is the price.