Products

MEIDI 5*3mm SMD Magnetic Passive Buzzer — a 12Ω 3V SMD electromagnetic passive buzzer with 3.0 mm extended cavity in a 5.0×5.0 mm footprint, delivering ≥80 dB at 4 kHz. Extended cavity design for acoustic output in industrial and outdoor environments. Request a quote or order free samples today. OEM customization and bulk pricing available.

The MEIDI 5*5*2mm Surface Mount Magnetic Passive Buzzer is a 12Ω 3V SMD passive electromagnetic buzzer with a central aperture acoustic design. Measuring only 5.0 × 5.0 × 2.0 mm, it delivers a sound pressure level (SPL) of ≥80 dB at 4 kHz. Its symmetrical acoustic emission design ensures uniform SPL distribution in handheld devices, wearables, and industrial applications. Request a quote now or order a free sample. OEM customization and bulk pricing are available.

MEIDI 9650 Electromagnetic Active Buzzers feature a built-in oscillator across three voltage options: 3V, 5V, and 12V, covering a 1.5–16V operating range. Apply DC power to generate a steady 2700 ± 300 Hz tone, delivering ≥85 dB at 10 cm while drawing ≤30 mA. Built with through-hole polarized pins and a black PBT housing, they operate reliably from -20 to +70 °C and fit standard manufacturing assembly lines. Well-suited for industrial alarm systems and audio alert applications, these buzzers support efficient bulk sourcing for ongoing production needs. Contact MEIDI to request samples.

MEIDI 9042 Electromagnetic Active Buzzer comes with a built-in oscillator in three variants: 3V, 5V, and 12V, covering a 1.5–16V operating range. DC input generates a steady 2700 ± 300 Hz tone, reaching ≥85 dB at 10 cm while drawing ≤30 mA. Measuring only 9.0 × 4.2 mm and weighing 0.71 g, this compact through-hole unit has a black PBT housing and operates from -20 to +70 °C. Tailored for portable electronics, it integrates cleanly into high-volume production lines. A solid option for procurement in battery-powered devices, reach out to MEIDI for full specifications or order inquiries.

The MEIDI 9*5.5mm Magnetic Passive Buzzer series offers a range of impedance and frequency specifications. QMB-09B-03 (16Ω, 3V, 2.7kHz) for 3.3V logic direct drive; QMB-09B-05 (42Ω, 5V, 2.7kHz) for 5V industrial buses; QMB-09B-05 4KHZ (42Ω, 5V, 4.0kHz) for high-frequency tonal clarity. All variants share identical 9.0 mm footprint and black PBT housing, enabling single PCB layout across multiple voltage architectures. Request evaluation samples or submit an RFQ today. Volume pricing and custom lead forming available.

The MEIDI 4218 Piezo Alarm Buzzer is a high-output electronic siren built for safety-critical applications that demand clear, long-range hazard alerts. Designed for noisy industrial settings rather than simple status indication, it delivers penetrating sound pressure to warn personnel across wide areas. Its 2800 Hz tone aligns with peak human auditory sensitivity. The rugged ABS housing resists impact and temperature swings, and through-hole mounting secures easily to control panels and machinery enclosures. Running on 3–24 VDC, it works with both mains-powered fire panels and battery-backed security systems, making it practical for supply to industrial and safety projects. A reliable choice for bulk orders in facility safety upgrades, contact MEIDI for specifications and pricing.