Okay, so I got this Tiiyee door alarm mainly to stop my sneaky cat from opening doors at 3 AM (yes, she's that smart). Here's the real tea:

• The GOOD: This thing is LOUD. Like, 'wake-the-neighbors' loud at 120dB. Installation took literally 3 seconds - just hang it on the knob and boom, you're protected.

• The MEH: The sensitivity settings are weird. On 'Low' it went off when I breathed near it (not kidding). 'High' setting acted the same. Only 'O' mode worked properly for actual door movements.

• Pro Tip: Use fresh batteries! When mine were dying, it made this creepy soft noise like a ghost whispering. Not cool at 2 AM.

Overall? For $15? Absolute steal. Would buy again just for the peace of mind (and to outsmart my Houdini cat).