1pc SFM-20B High Decibel Active Buzzer Speaker DC3-24V Continuous Sound 2312 Piezoelectric Piezo Electronic For Arduino

Description �� High-Decibel 2312 Active Piezoelectric Buzzer for Alarms, Indicators & DIY Projects Looking for a reliable, loud, and compact buzzer module? The SFM-20B 2312 Active Buzzer delivers high-decibel continuous sound, making it ideal for alarms, warning systems, and Arduino or microcontroller-based projects. Operates on a wide DC voltage range of 3V to 24V, with built-in driving circuit – just connect power, and it sounds! ⚙️ Key Features ✅ Wide Voltage Range: Operates from DC 3V to 24V, suitable for multiple platforms. ✅ Active Buzzer: Built-in oscillating circuit – no external driver or microcontroller signal needed. ✅ High Sound Output: Loud alert at 85–95dB @ 12V, perfect for noisy environments. ✅ Compact Design: Diameter 23mm x Height 20mm – fits into tight spaces. ✅ Pre-soldered Cable: Ready-to-use with 2-pin red/black wire for quick connection. ✅ Durable Build: ABS plastic casing and sealed body for long-term use. ✅ Continuous Sound: Sounds as long as power is applied – ideal for continuous alerts. �� Specifications Parameter Value Model SFM-20B (2312) Type Active Piezoelectric Buzzer Voltage Range DC 3V – 24V Rated Voltage DC 12V Sound Output 85 – 95dB @ 12V Sound Type Continuous Tone Current Consumption ≤ 30mA @ 12V Cable Length Approx. 10–15cm (2-wire cable) Body Material Black ABS Plastic Mounting Style Panel Mount / Adhesive Tape Size Ø23mm × 20mm (Height) Polarity Red ( ), Black (–) �� Applications �� Security & burglar alarms �� Industrial alert systems �� Car reverse buzzers �� Home automation �� Battery low indicators ��️ Arduino, Raspberry Pi & DIY electronics �� What’s Included 1 × 2312 Active Buzzer SFM-20B with cable (Pre-wired)