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5Pcs SFM-27 DC 3-24V Electronic Buzzer Alarm Sounder Continuous Sound Beep (Pack of 5) CYT1083

5Pcs SFM-27 DC 3-24V Electronic Buzzer Alarm Sounder Continuous Sound Beep (Pack of 5) CYT1083

Q: Will this work in a school experiment with a D battery as the power source to make the buzzer go off when the circuit is complete?

I didn't have a D battery handy, but, It did work on a AA 1.5v battery. So, I would think it would work fine on your D battery. I use these as a circuit tester, for when I cant see my test light or meter on 12 volt systems.

Q: The description somewhat confusing; Is tone one long beep....... or is it beep, beep, beep, etc?

It's a continuous high pitched "beep" noise as long as voltage is applied. Very similar tone to the backup beepers in vehicles. It does not pulse on and off unless you control the voltage on and off.

Q: appropriate for a classroom lab?

Should work very well in teaching situation

Product ID: 49282932

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Details

Color
Black
Brand
Cylewet
Power Source
Corded
Voltage
24 Volts
Control Method
Touch

⚡3-24V wide voltage range

📏Compact 3cm diameter

🔊100dB sound pressure

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Description

🔔 Sound the alarm on ordinary—be heard, be noticed!

POWERFUL 100 D B ALERT - Cut through noise with crystal-clear, high-decibel sound.
COMPACT LIGHTWEIGHT - Sleek 3cm diameter and just 0.7oz for easy, discreet mounting.
PLUG PLAY CONVENIENCE - Comes with 11cm wire and built-in batteries—ready to install instantly.
VERSATILE VOLTAGE RANGE - Operates seamlessly from 3V up to 24V for flexible integration.
DURABLE ALL WEATHER DESIGN - Operates reliably from -20°C to 45°C, built to last in any environment.

This 5-pack of SFM-27 electronic buzzer alarms delivers a powerful 100dB beep within a compact 3cm diameter housing. Designed for versatile use, it supports a wide voltage range of 3-24V and operates efficiently at just 15mA current. With built-in batteries and an 11cm wire, these buzzers are ready for quick installation and reliable performance across a broad temperature range, making them ideal for professional and industrial alert systems.

Specifications

Noise Level	100 Decibels
Mounting Type	Wall Mount
UPC	743447407529
Manufacturer	Qianxin
Part Number	CYT1083
Item Weight	0.704 ounces
Package Dimensions	4.8 x 4.29 x 0.87 inches
Item model number	3216550315
Is Discontinued By Manufacturer	No
Item Package Quantity	1
Batteries Included?	Yes
Batteries Required?	No

Have a Question? See What Others Asked

Will this work in a school experiment with a D battery as the power source to make the buzzer go off when the circuit is complete?

The description somewhat confusing; Is tone one long beep....... or is it beep, beep, beep, etc?

appropriate for a classroom lab?

Are they waterproof?

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