Door Handle Alarm with 130dB Vibration Triggered Portable Door Alarms When Opened - Perfect for Kids, Toddler, Elderly, Hotel, Travel, Bedroom (2 Pack Door Security)

Very loud works as advertised

Easy to use. VERY loud! Lets me sleep without worrying about husband wandering outdoors.

Works great. Extremely loud. Def recommend.

These alarms are extremely loud and that’s exactly what I need! My eight-year-old daughter is autistic and likes to open doors. I used the door alarm on our cabin room door when we went on a family cruise.

Very high quantity for value, very clear, cost effective and quality product for the value paid. It is a game changer.

The product works but getting batteries to fit the device can be a struggle until one gets the hang of it. They fit very tightly. Although the directions explain how to adjust the sensitivity level (volume) of the alarm options the loudness sounds the same on the ones sent to me. The delay before sound set button works. However, it is not a simple thing to set the alarm to permanently delay and/or to use a certian volumne if it will do those things and this is something this reviewer hasn't yet mastered and wonders if the device will actually do? It can be hung on a door knob and return to stillness there, but I suspect that every time one tries to remove it within the delay frame and get it turned off so that it doesn't harm one's ears (sound can be too much after awhile at 130 db if I got that right), one will find that doing be hit or miss or that the alarm will nearly always go off . Other than for these things it is one of the better devices in terms of loud enough sound to wake people up inside a house and alert people on the outside as most devices use only 97-110-120 db in the USA that do this door knob thing or are applied to windows and carry key chains and the like. It also has a good sturdy feel and feels good in the hands and the back cover slides off easily enough for battery change.

Exactly as described.

The batateries do not fit in the opening so it cannot work. Both of them have the same problem. They are defective.