






đź”” Make your alerts impossible to ignore with the power of precision sound!
The Stemedu 6PCS Active Piezo Buzzer SFM-20B delivers a powerful 95dB continuous beep across a versatile 3-24V DC range. Compact and energy-efficient, these buzzers are ideal for Arduino projects and a wide array of electronics, providing reliable, loud alerts while consuming minimal power.






| Brand | Stemedu | 
| Color | Black | 
| Power Source | dc | 
| Compatible Devices | Personal Computer | 
| Item dimensions L x W x H | 1.38 x 0.91 x 0.47 inches | 
| Connectivity Technology | Wired | 
| Installation Type | Screw-In | 
| Alert Type | Motion Only | 
| Voltage | 24 Volts | 
| Control Method | Voice | 
| Included Components | 6 x Piezoelectric Buzzer Alarm | 
| Noise Level | 95 dB | 
| Unit Count | 6.0 Count | 
| Manufacturer | Stemedu | 
| Item Weight | 0.634 ounces | 
| Product Dimensions | 1.38 x 0.91 x 0.47 inches | 
| Item model number | ST3486AX6 | 
| Batteries Included? | No | 
| Batteries Required? | No | 
M**F
Works good
Great little set to add to the collection of small electrical parts for Arduinos. Tested out on a quick little circuit and work as expected. My daughter has been annoying me with buzzers for over a day now.
A**B
More of a beeper than a buzzer.
These are really cheap and lightweight. They're as simple and inexpensive as they could possibly be. Just two thin tiny wires and a little plastic circle box. Basically weightless. You get six of them. Calling them a buzzer is pretty much inaccurate though, because the sound they make is a high-pitched beep. It's actually pretty annoying, but they work super well. You can use virtually any battery to power them, so they're incredibly easy to set up/operate and they're super versatile.
Trustpilot
2 weeks ago
1 day ago