2 PCS Piezo Buzzer, Icstation Buzzer Alarm 12V Electronic Beep Buzzer 100dB Piezo Alarm Siren Continous Sound for Motorcycle Golf Cart Vehicles Car Alarm

Used them as warning that the car headlights are on when I leave the car, they work very well for that, with exception that they are quite loud, would be nice if there were a adjusting screw... I dampened the loudness a little by putting tape over it. Near as I can tell it is a very good product but time will further inform me...

Excellent pour servir d'avertisseur de clignotant de moto. Pas aimé la différence de note. Un sonne plus haut que l,autre. J'aurais aimé avoir deux buzzers de même tonalité.

They worked on f250 wired to key on fuse to tell when head lights were on

If you’re going to use this as an alarm substitute for a bmw e46, I would suggest spending a little more to get a louder buzzer or an actual siren. Sound is easily muffled by the hood, but sounds decent with the hood open.

I used two of these in parallel to chase moles from my yard. Wired to a timer that provides a 15 min on cycle every hour or two. I placed them in a plastic gutter drain tube and burred for a short run in the ground. It seems to be working great when all the poison peanuts and other commercial products failed. It's only been a couple of weeks now, but if they just work for the rest of the summer I will gladly order new ones next spring. (NOTE) I was able to place these in an area upstream of the water flow in a clean-out. They don't seem suited for wet locations.