Product Overview

Mining Safety Voice Alarm Device is an industrial audio communication system for underground and open-pit mines, providing real-time safety alerts, operational dispatch, and personnel communication in remote or high-risk mining environments.

Features

Multi-Mode Alerts
Switches between safety warning, work dispatch, and training modes, replacing multiple devices and reducing operational costs.

System Integration
Automatically triggers alarms from monitoring, personnel tracking, and environmental sensors, with real-time feedback to control terminals for faster response.

Shockproof Design
Enclosure withstands vibrations and impacts in underground and open-pit mining, ensuring long-term stability.

Low Maintenance
Core components require up to 60% less maintenance than traditional units, reducing downtime and labor costs.

Main Technical Parameters

Explosion-proof Type: Exd[ib]I Mb
Rated Operating Voltage: 127 V AC
Rated Operating Current: ≤500 mA
Intrinsically Safe Power Supply Maximum Output Voltage (Uo): 12.5 V DC
Intrinsically Safe Power Supply Maximum Output Current (Io): 550 mA
Audible Alert Mode: Voice prompt, with distortion ≤ 15%
Alarm Voice Prompt Sound Level: ≥85 dB(A)
Visual Signal from Alarm: Clearly visible within 20 meters in dark environments
Opto-isolator Withstand Voltage: ≥1500 V
Speaker Type: Waterproof externally magnetic type, 8Ω / 5W

Operating Environment

Altitude not exceeding 1000 m (Atmospheric pressure: 80 ~ 106 kPa)
Ambient Temperature: 0°C ~ +40°C
Relative Humidity: ≤95% (at 25°C)
Suitable for hazardous locations with potentially explosive mixtures of methane and coal dust
Locations without corrosive gases or vapors sufficient to damage metals and electrical insulation materials
Locations without severe impact or vibration
Locations free from water dripping

Fault Causes And Troubleshooting

No.	Fault Phenomenon	Cause Analysis	Remedy
1	No display when powered on	No 127V power supply or blown fuse	Check power supply or replace fuse
2	Partial LED indicators extinguished	Damaged LEDs	Replace LEDs
3	No audible voice signal	Damaged speaker Damaged voice circuit	Replace speaker Replace main control board

Customization Services

Multi-Mode Configuration
Adjust safety alert, work dispatch, and training modes to match specific mine management requirements.

Network and System Integration
Tailor connectivity to existing monitoring, personnel tracking, and environmental systems for seamless operation.

Power Supply Options
Customize solar, battery, or hybrid power setups to suit remote or electricity-limited sites.

Alert Protocols
Set custom audio levels, alarm sequences, and notification priorities according to site safety standards.

Factory Advantages

Wide Market Coverage
Used in major Chinese mining regions including Shandong, Inner Mongolia, Shaanxi, Shanxi, Ningxia, Xinjiang, Guizhou, and Gansu.

Full-Service Support
Comprehensive pre-sales and after-sales support helps customers optimize installation, operation, and maintenance.

Bulk Supply Ready
Capable of fulfilling large orders, meeting the needs of wholesale and repeat customers efficiently.

Certifications

Mining safety, explosion-proof, and CCC certified; all units undergo rigorous functional and safety testing.

FAQ

Q: How does the device handle network interruptions?

A: Local processing allows alarms and dispatch to function offline; data automatically syncs when connectivity is restored.

Q: How is the audio performance in noisy mining conditions?

A: Built-in high-decibel speakers and directional microphones ensure clear voice alerts up to 100 meters, even in high ambient noise.

Q: Can multiple units work together?

A: Yes, devices can be linked across a mine site to coordinate alerts and dispatch messages, supporting synchronized operation.

Q: How modular is the device for maintenance or upgrades?

A: Core modules such as power, speakers, and control boards are easily replaceable without disassembling the entire unit.

Q: How energy-efficient is the system?

A: Dual-power design with low-power electronics reduces overall energy consumption and extends battery life in solar-powered sites.

Q: Is the device compatible with third-party safety platforms?

A: Fully compatible with standard industrial monitoring, personnel tracking, and environmental systems for flexible integration.

Q: How is device performance verified before shipment?

A: Each unit undergoes multi-point functional testing, vibration and impact tests, and environmental simulations to ensure reliability in extreme mining conditions.

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