Review on HENDUN Wireless Door Alarm with Remote Control, Open Window Alarms, Home Security Sensor, Pool Alarm for Child Safety, Prevent Robbery (Pack of 2) by Tres Carmon

I installed this in my home two days ago. Previous alarms I've tried had a 30 second delay before they went off. This one works out of the box, which is great! It warms me when my adult resident opens a door in my adult family's home that he shouldn't open. It's very easy to install! The stickers they put on are pretty tough so it will be difficult to fake them. I hung it OUTSIDE my bedroom door to warn me about late night wanderings. The alarm clock has two modes. the first one will amaze you. But it is good. (This is a very loud siren). The second is a loud bell that chimes each time to alert you to boarding and disembarking. This is great for my purpose. I think it would also be great for a small business to warn people when customers are going in and out. but it is very noisy and FYI I have hearing loss in both ears and still think it is noisy. This will surely scare robbers to death. The only downside I found with this was that after a few tries I couldn't get a remote to work for either alarm. Instead, I tagged each one. Maybe I'll have better luck with the next set. I will definitely order more of these!