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Your cart is empty. Length of Wire: 11cm /4.3in
Diameter: 3cm /1.2in
Rated Voltage: 12V
Range of Voltage: 3-24V
Rated Current: 15mA at 12VDC
Sound Pressure Frequency: 100dB at 12VDC /30cm
Resonant Frequency: 2.5±0.5KHZ
Operating Temperature: -20+45℃
Storage Temperature: -20+60℃
Package Includes:
5× SFM-27 DC 3-24V Electronic Buzzer Alarm Sounder
Timothy
Reviewed in the United States on February 22, 2025
I used these to make 12 volt testers, this way I can hook this inline on a circuit, then work the system and listen for the buzz. They work very well for my application.
Anonymous er
Reviewed in the United States on January 30, 2025
I used one of these to connect to a keyless entry system of a car so that it makes a subtle beep when you press the unlock or lock button. It makes a nice beep sound with 12v of power. I was worried it would be too loud or too quiet for the application I was using it for, but it turned out to be just perfect. I did notice that all 5 of the piezo buzzers make a slightly different tone with the same amount of power, which could be good if you wanted a slightly lower or higher tone in the beep.
Moe
Reviewed in the United States on September 5, 2024
Wired one of these to a proximity sensor and wow are they loud! A little louder than a standard smoke alarm.
Wes
Reviewed in the United States on September 26, 2024
I attached this to a 9v battery. Everytime I want to drive someone insane I'll hide it 🙃
doc m
Reviewed in the United States on July 18, 2024
I bought these buzzers to remind me when my turn signals are flashing on my Kawasaki Vulcan motorcycle. Unfortunately, this model doesn't have self-canceling turn signals. The buzzers work fine so far and they're loud enough for me to hear, even when they're mounted under the seat and the engine is running. My only criticism is the ultra-skinny wires they use. It's really difficult to connect them to other wiring and they can easily be broken or dislodged if not mounted very carefully. I would have gladly paid more for a sturdier design.
Mike Slater
Reviewed in the United States on March 16, 2024
Needed interior sounder as night time alert while sleeping since push notifications on phone don't always wake me up. Volume of the Sounder is controlled by the variable voltage range of the power supply input to the device. I'm using 5VDC and this has plenty of level to awaken me as it's located in my bedroom. The device uses 3 to 24 VDC for power and I imagine the 24VDC volume level would be impressive.
Waterburner
Reviewed in the United States on April 26, 2024
The buzzer is pretty loud for its size and price. It’s very loud with 20v power supply
from the Apple 55
Reviewed in the United States on May 25, 2023
I needed inexpensive morse code oscillators to teach code classes and be able to keep student cost low. Thus product solved the issue! Great product and great price.....thank you!!!
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