The MEIDI HND-4218 12VDC Electronic Alarm Siren with 95dB Siren Tone is an electronic alarm siren designed for audible warning and alert applications. Rated for 12VDC operation, it produces a siren tone with Min. 95dB sound pressure output measured at 30cm.
The HND-4218 operates from a 5–18VDC supply, consuming Max. 25mA at 12VDC. It features a black ABS housing with UL1007 AWG28 wire leads and an approximately 15g mass. The compact form factor and wire-lead connection suit panel or surface mounting in industrial, security, and commercial alarm systems.
High SPL output — Min. 95dB sound pressure for attention-critical alarm applications
12VDC rated operation — 5–18VDC operating range for standard DC alarm systems
Siren tone output — factory-set siren tone pattern
Compact alarm housing — black ABS housing with integrated mounting configuration
UL1007 AWG28 wire leads — standard appliance wire for secure installation
Wide temperature range — operates from -20℃ to +60℃, stores from -30℃ to +70℃
| Parameter | Specification | Test Conditions |
| Product Type | Electronic Alarm Siren | — |
| Rated Voltage | 12 VDC | — |
| Operating Voltage | 5 ~ 18 VDC | DC supply range |
| Tone Nature | Siren | — |
| Rated Frequency | Not specified in source | — |
| Mean Current Consumption | Max. 25 mA | At 12VDC |
| Sound Pressure Level | Min. 95 dB | At 12VDC, 30cm |
| Operating Temperature | -20℃ ~ +60℃ | Continuous |
| Storage Temperature | -30℃ ~ +70℃ | — |
| Mass | Approx. 15 g | — |
| Housing Material | Black ABS | — |
| Wire Type | UL1007 AWG28 | — |
| Environmental Compliance | RoHS / Yes | — |
Industrial alarm systems — machine fault, process hazard, and emergency stop alerts
Security and intrusion systems — perimeter breach and unauthorized access warnings
Automation equipment — status and fault alarms in control panels
Automotive and marine 12V systems — compatible with 12VDC supply rails
Commercial warning devices — siren alerts for workplace and public safety
| Design Requirement | HND-4218 Advantage |
| Audible alarm alert | Min. 95dB siren output for attention-critical applications |
| Simple DC drive | Operates from 5–18VDC; no complex drive circuitry required |
| Standard wire termination | UL1007 AWG28 wire leads for reliable panel installation |
| Compact form factor | Black ABS housing suitable for panel or surface mounting |
| Wide operating temperature | -20℃ to +60℃ operating range |
MEIDI manufactures the HND-4218 12VDC Electronic Alarm Siren with 95dB Siren Tone under controlled production processes. Each production lot undergoes:
SPL verification — sound pressure verification at 12VDC, 30cm
Current consumption test — Max. 25mA check at rated voltage
Tone verification — siren tone pattern check
Dimensional inspection — body and mounting-hole layout 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. What voltage options are available for the HND-4218?
The source specification lists a 12VDC rated voltage with a 5–18VDC operating range. Contact MEIDI for information on other voltage variants if required.
2. What is the sound pressure level and test distance of the HND-4218?
The source specification lists Min. 95dB sound pressure level at 12VDC, measured at 30cm. Contact MEIDI for detailed acoustic test conditions and distance-versus-SPL data.
3. What type of tone does the HND-4218 produce?
The source specification lists the tone nature as "siren." Contact MEIDI for audio samples and tone-pattern details.
4. What are the mounting dimensions of the HND-4218?
The dimension drawing shows the body outline and mounting configuration. Contact MEIDI for the official mechanical drawing with full dimensions and tolerances.
5. What is the operating temperature range of the HND-4218?
The source specification lists an operating temperature range of -20℃ to +60℃ and a storage temperature range of -30℃ to +70℃.
For technical datasheets, evaluation samples, acoustic coverage data, 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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