The MEIDI HND-2312 is a piezoelectric active buzzer with a built-in oscillator circuit. Designed for 12VDC operation, it produces a continuous tone when the rated DC voltage is applied, eliminating the need for an external PWM or signal-generation circuit.
The HND-2312 operates from a 6–15VDC supply with a 12VDC rated voltage, consuming Max. 20mA at rated conditions. It delivers Min. 90dB sound pressure at rated voltage, measured at 10cm. The Φ23×19mm black ABS housing and approximately 4.5g mass suit panel-mount acoustic alert applications in industrial control, security systems, automotive 12V modules, and consumer appliances.
Built-in oscillator — DC drive eliminates the need for external PWM or oscillator circuitry
12VDC rated operation — 6–15VDC operating range for standard 12V systems
Continuous tone output — factory-set continuous tone at 3500±500Hz
Compact form factor — Φ23×19mm black ABS housing for space-constrained designs
Wire-lead termination — red/black-style wiring for simple electrical connection
Wide temperature range — operates from -20℃ to +70℃, stores from -30℃ to +80℃
| Parameter | Specification | Test Conditions |
| Product Type | Piezoelectric Active Buzzer | — |
| Rated Voltage | 12 VDC | — |
| Operating Voltage | 6 ~ 15 VDC | DC supply range |
| Rated Frequency | 3500 ± 500 Hz | At rated voltage |
| Tone Nature | Continuous | — |
| Mean Current Consumption | Max. 20 mA | At 12VDC |
| Sound Pressure Level | Min. 90 dB | At 12VDC, 10cm |
| Operating Temperature | -20℃ ~ +70℃ | Continuous |
| Storage Temperature | -30℃ ~ +80℃ | — |
| External Dimensions | Φ23 × 19 mm | Per dimension drawing |
| Mass | Approx. 4.5 g | — |
| Housing Material | Black ABS | — |
| Wire Type | Domestic wire, UL1007 28# equivalent, 1.2mm OD | — |
| Environmental Compliance | RoHS / Yes | — |
Industrial control panels — alarm and status tones driven from PLC or relay outputs
Security systems — intrusion alerts, door-open warnings, and status indicators
Automotive 12V modules — compatible with 12VDC vehicle supply rails
Consumer appliances — power-on alerts and error notifications
Test and instrumentation — fault and completion indicators requiring simple DC drive
| Design Requirement | HND-2312 Advantage |
| Simple drive circuit | Built-in oscillator operates from DC voltage; no external PWM required |
| Standard 12V systems | 12VDC rated with 6–15VDC operating range |
| Compact installation | Φ23×19mm body for space-limited panel designs |
| Continuous alert tone | Factory-set 3500±500Hz continuous tone |
| Reliable wiring | Wire-lead termination for straightforward assembly |
MEIDI manufactures the HND-2312 piezoelectric active buzzer under controlled production processes. Each production lot undergoes:
Frequency verification — rated frequency test at 3500±500Hz
SPL verification — sound pressure verification at 12VDC, 10cm
Current consumption test — Max. 20mA check at rated voltage
Dimensional inspection — Φ23×19mm body check per dimension drawing
Environmental compliance — RoHS material verification
Products are manufactured with RoHS-compliant materials. Contact MEIDI for detailed quality documentation and test reports.
1. Does the HND-2312 require an external oscillator or PWM signal?
No. The HND-2312 is a piezoelectric active buzzer with a built-in oscillator. It produces a continuous tone when DC voltage within the 6–15VDC range is applied across the power leads.
2. What is the sound pressure level and test condition for the HND-2312?
The source specification lists Min. 90dB sound pressure level at 12VDC, measured at 10cm. Contact MEIDI for detailed acoustic test conditions and distance-versus-SPL data.
3. What is the rated frequency of the HND-2312?
The source specification lists a rated frequency of 3500±500Hz at rated voltage.
4. What is the mounting configuration of the HND-2312?
The dimension drawing shows a Φ23×19mm body with wire leads for panel or chassis mounting. Contact MEIDI for the official mechanical drawing.
5. What is the operating temperature range of the HND-2312?
The source specification lists an operating temperature range of -20℃ to +70℃ and a storage temperature range of -30℃ to +80℃.
For technical datasheets, evaluation samples, or OEM configuration discussion, contact MEIDI. Product specifications and qualification documentation are available under mutual NDA.
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No.6, Wenlin Road, Chenbao Town, Xinghua City, Jiangsu Province, China
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