Products

MEIDI 2310E Active Piezoelectric Active Buzzer — 23×10 mm wire-lead piezoelectric active buzzer with mounting ears, native 12VDC operation and 3–24V survival range. Built-in oscillator generates 3500 Hz fixed tone at ≤4 mA, eliminating external drive circuitry. Sample-verified 91–94 dB output from 23 mm piezo diaphragm suits industrial PLC panels, automotive 12V accessory buses, UPS alarm modules, and solar charge controllers. Black ABS housing withstands wave soldering at 260 ℃. Request evaluation samples or submit an RFQ for volume pricing and custom lead configurations.

MEIDI 9*4.2mm Magnetic Passive Buzzer line offers three through-hole electromagnetic units in a shared 9.0 × 5.5 mm form factor, with choices of impedance and frequency. The QMB-09B-03 runs at 16 Ω / 3V / 2.7 kHz for direct 3.3V logic drive. The QMB-09B-05 uses 42 Ω / 5V / 2.7 kHz for 5V industrial bus systems. The QMB-09B-05 4KHZ variant keeps the same 42 Ω / 5V rating but shifts to 4.0 kHz for a sharper, higher-pitched alert. All three fit an identical 9.0 mm PCB footprint with a black PBT housing, so one layout works across multiple voltage designs. Ask for evaluation samples or send an RFQ today. Volume pricing and custom lead forming are available.

MEIDI TMB12A03 Electromagnetic Active Buzzer come in four voltage ratings: 3V (TMB12A03), 5V (TMB12A05), 12V (TMB12A12), and 24V (TMB12A24). All share the same 12.0 × 9.5 mm footprint and black PBT housing. The 5V TMB12A05 measures 96.4–98.7 dB at 2400 Hz across a 3–7 V operating range. By matching the voltage variant to the application, designers get direct compatibility with 3.3V logic, 5V industrial buses, 12V automotive systems, and 24V control circuits — no external regulator required. Send an RFQ for bulk pricing. Engineering samples ship within three days, and OEM customization is welcome.

MEIDI 9mm 5V Electromagnetic Active Buzzer weighs 0.75 g in a through-hole package.Running natively at 12V across an 8–16 V tolerance range, it handles cold-crank voltage dips and alternator spikes without needing a buck regulator. A built-in oscillator produces ≥85 dB at 2700 Hz, and the black PBT housing withstands 255 °C wave soldering. It fits automotive 12V systems, agricultural equipment, and PLC I/O modules well. Ask for a quote on volume orders. Free samples are available for acoustic testing, and custom lead forming is supported.

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.