Let me start by saying this little gadget is LOUD. Like, 'wake-the-neighbors' loud. I tested the Tiiyee Door Handle Alarm in my apartment, and the 120dB alarm made my cat bolt under the bed (sorry, Whiskers). The vibration sensor works exactly as promised - it screams bloody murder when someone touches or turns the handle.

The setup couldn't be simpler: pop in 3 AAA batteries (not included), flip the switch, and hang it on any door handle. I particularly love using it when traveling - that extra layer of security helps me sleep better in unfamiliar hotels. The two alarm modes (continuous siren vs chime) offer nice flexibility depending on whether you want to scare off intruders or just get a gentle heads-up.

Now for the not-so-great parts: The sensitivity settings can be finicky. On 'High' mode, mine once went off because my AC vent made the door vibrate slightly. Also, there's no silent way to disarm it - removing it from the handle always triggers a brief alarm (awkward at 3AM bathroom trips).

Despite these quirks, for under $20, this provides serious peace of mind. It's become my go-to gift for elderly relatives and new parents - way more affordable than fancy home security systems. Just maybe warn your housemates before testing it!