3PCS DC 3-24V 90dB Active Piezo Electronic Buzzer Beep Tone Alarm Ringer Continous Sound (Black) SFM-27-W

Loud using 12V battery! Not excessively loud, but it can be heard from about 50 feet away. Would be nice if the wires were larger gauge to make connections easier. The wires are about 20-22 gauge solid wire which requires soldering the wires to connect them to anything. I needed to connect with spade connectors so I had to solder the wires to the connectors before I could connect to the power feed wires. I have only had them installed for about a week so I am not sure how long they will last, but for the price and getting three it was a good deal.

These are loud and sound exactly like a golf cart reverse tone! We installed one in a water bottle with a switch and 9V battery to hide in a friend’s golf cart. She thought her cart was stuck in reverse, and a mechanic friend had to find it for her! This lasted a long time on a 9V battery and worked perfectly!

I thought these for a project where I needed the user to hear these buzzers through headphones and they didn’t disappoint. Even after stripping the wire and attaching it directly to a board and getting it wet they still worked perfectly fine and were the loudest alarms I could find.

It could be a little louder but overallthe volume is good. I used it as trip cord alarms for airsoft games.

listed at 95dbs which is loud. At 12vdc you can just hear it, not loud at all.

Worked as it should expected, no complaints

They're cheap enough. I installed one on each of my two manual bilge pumps to remind me to turn them off. They are inside the center console and I don't hear too good but I hear these, they make a racket.

Very loud. Like a fire alarm. I'm using 12V.