Reliable Electromagnetic Buzzer For Electronic Alarms And Signal Devices

MEIDI 5V Electromagnetic Buzzer PCB Mount — a 3V through-hole electromagnetic active buzzer in a 12.0×7.5 mm footprint, delivering ≥85 dB at 2.7 kHz with integrated oscillator. The 7.5 mm extended cavity height — 15% taller than the 6.5 mm baseline — enlarges the internal Helmholtz resonator volume for measurably enhanced acoustic efficiency. Sample data confirms 89.6–93.2 dB output at ≤30 mA, achieving higher SPL per milliamp than compact variants. Wide 2–5 V range supports Li-ion battery curves and 3.3 V logic rails. Black PBT housing tolerates wave soldering at 255 °C. Request acoustic evaluation samples or submit a volume RFQ today. OEM cavity-height customization available.

MEIDI 3V Electromagnetic Buzzer PCB Mount — a 3V through-hole electromagnetic active buzzer in a 12.0×6.5 mm footprint, delivering ≥85 dB at 2.7 kHz with integrated oscillator. Wide 2–5 V operating range accommodates Li-ion battery drain curves and 3.3 V logic rails with regulator tolerance. ≤30 mA current draw enables direct MCU GPIO drive without external components. Black PBT housing withstands wave soldering at 255 °C and manual rework at 360 °C. Request an industrial quote or order reliability-tested samples today. OEM lead forming and volume pricing available. Also available in 5 V (HMB1206-05) and 12 V (HMB1206-12) variants.