Description
The SFM-20B Piezoelectric Buzzer is a high-efficiency audible signal device designed for applications that require a pulsing (intermittent) alert. Unlike continuous beepers, the SFM-20B produces a distinct “beep-beep-beep” sound, making it significantly more effective at grabbing attention in busy or noisy environments.
With its wide voltage compatibility and low current draw, the SFM-20B is the industry standard for fault indicators, timers, and safety notification systems.
Key Features and Benefits
-
Distinct Intermittent Tone: Built-in circuitry generates a rhythmic pulsing sound that is more noticeable to the human ear than a steady tone.
-
Versatile Voltage Range: Operates reliably from 3V to 24V DC, allowing for seamless integration with 5V microcontrollers (Arduino/ESP32), 12V automotive systems, and 24V industrial circuits.
-
High-Volume Output: Delivers a crisp 95dB signal, ensuring the alarm is heard from a distance or through equipment housing.
-
Energy Efficient: Consumes less than 15mA, making it perfect for battery-powered devices where power conservation is critical.
-
Plug-and-Play Design: As an active buzzer, it requires no external frequency programming. Simply apply power, and it begins pulsing immediately.
Technical Specifications
Parameter Specification Model SFM-20B Sound Type Intermittent (Pulsing / Beep-Beep) Operating Voltage 3V – 24V DC Rated Voltage 12V DC Current Consumption ≤ 15mA Sound Pressure Level ≥ 95dB (at 10cm) Resonant Frequency 3000 ± 500 Hz Color Industrial White/Cream Mounting Flange Mount (2-hole)
Reviews
There are no reviews yet.