Let me start by saying this door security bar is a game-changer for anyone who values home safety. The moment I installed it under my sliding patio door, I felt an immediate sense of security. The high-grade iron construction feels incredibly sturdy - I literally leaned my full weight against the door to test it, and it didn't budge one bit.

The alarm feature is what really sold me though. That 120db siren is NO JOKE - when my curious cat accidentally bumped the door, the alarm went off so loud it startled both of us! The sensitivity is perfect - enough to detect real threats but not so much that it's constantly false alarming.

Installation was a breeze. I loved that I didn't need any tools or permanent modifications to my rental apartment. Just adjusted the length (which has a great range from 32" to 48"), positioned the rubber stopper under the handle, and boom - instant security boost. The pivoting ball joint ensures perfect floor contact every time.

One thing to note: like another reviewer mentioned, you do need to supply your own battery (it takes a standard CR2 battery). While the instructions could be clearer about this, a quick online search solved that minor hiccup for me.

After using this daily for several months now through all kinds of weather (including some serious wind storms), it's held up perfectly. For peace of mind at this price point, I'd buy it again in a heartbeat - in fact, I'm planning to get another one for my bedroom window!