Just got this little security gadget last week and wow, it's louder than my neighbor's yappy dog! The 108dB alarm literally made me jump when I tested it (sorry, cat).

The installation was stupid easy - just peel-and-stick with the included tape. Took me longer to decide where to put it than to actually install it. Pro tip: Don't put it near your bedroom unless you want heart attacks at 3AM.

Love that it doubles as a doorbell (with a less terrifying chime option). My pizza guy looked confused but impressed when he triggered the 'friendly' mode. The flashing red light during alarm mode feels very Mission Impossible.

Battery life seems decent so far, though they really should include batteries - had to raid my TV remote for AAs like some kind of battery bandit.

Only real downside? No smart features. If I'm out and someone breaks in, I won't know until I come home to either a burglar or very angry neighbors (that alarm DOES NOT stop automatically).

For under $20 though? Totally worth it for the peace of mind and the look on my nosy neighbor's face when she accidentally triggered it.