MIRA Safety VPU-1 Respirator Voice Projection Unit: Communicate Clearly in Critical Environments
MIRA Safety VPU-1 Respirator Voice Projection Unit: Communicate Clearly in Critical Environments is backordered and will ship as soon as it is back in stock.
MIRA Safety VPU-1 Respirator Voice Projection Unit: Communicate Cle...
MIRA Safety VPU-1 Respirator Voice Projection Unit: Communicate Clearly in Critical Environments is backordered and will ship as soon as it is back in stock.
Description
Description
IMPORTANT NOTE: Requires the 3.5mm jack version of the MIRA Safety Gas Mask Microphone (sold separately). Mic mounts on the respirator’s exhalation valve; VPU connects via 3.5mm jack.
Overcome Respirator Communication Barriers
The MIRA Safety VPU-1 Respirator Voice Projection Unit delivers clear, amplified voice communication while wearing gas masks or half-face respirators. Engineered for professionals operating in high-noise, hazardous, or CBRN environments, this IP67-rated device ensures your voice is heard without compromising PPE integrity. Built to withstand exposure to extreme temperatures, vibration, water, salt fog, and dust.
Key Features & Technical Advantages
- Enhanced Audibility: Projects voice at 83 dBSPL @ 1 meter (audio output power remains at its set level and does not decrease as battery life drops)
- Extended Operational Readiness: 6 hours continuous use with 2-hour recharge
- Ruggedized Design: IP67 certified (IEC 60529; submersible to 1 m for up to 30 minutes)
- Tactical Integration: MOLLE-compatible clip system
- Simple Tactile Control: Three-button interface with volume range (+24 dB to −80 dB)
- CBRN Compliant: Meets ČSN EN 140 standards
- Environmental Resistance: Operates in −20°C to 60°C (−4°F to 140°F)
Technical Specifications
Audio Performance
| Specification | Value |
|---|---|
| Frequency Response | 300 Hz – 3,400 Hz |
| Input Impedance (1 kHz) | 150 Ω ±10% |
| Maximum Audio Output Power | 3 W |
| Sound Pressure Level | 83 dBSPL @ 1 m (constant at set level across battery discharge) |
Power System
| Specification | Value |
|---|---|
| Battery Type | Lithium Polymer 3.7V / 1200mAh (4.44 Wh) |
| Operating Time | 6 hours (continuous use at max audio output) |
| Charging Time | 2 hours (from 0–100% with IIN up to 1.8 A) |
| Battery Charging Input | 4.65–5.5 VDC (designed for standard USB charger) |
| Cycle Life | 500 charge cycles |
Environmental Resilience
| Parameter | Range |
|---|---|
| Operating Temperature | −20°C to 60°C (−4°F to 140°F) |
| Storage Temperature | −20°C to 45°C (−4°F to 113°F) |
| Charging Temperature | 0°C to 45°C (32°F to 113°F) |
| Ingress Protection | IP67 (IEC 60529) |
| Additional Resistance | Vibration, water, salt fog, dust |
| Flame Retardant | UL 94 V2 (min. level) |
| Calculated MTBF | 1,000 hours |
Physical
| Attribute | Value |
|---|---|
| Color | Black (RAL 9005) |
| Weight | 150 g ±10% |
| Attachment | MOLLE clip |
| Dimensions | See technical drawing/diagram |
Critical Applications
- Tactical Operations: SWAT, riot control, and military CBRN scenarios
- Industrial Safety: Hazmat response, chemical processing, and firefighting
- Emergency Response: Any situation requiring clear voice communication through respirators
Superior Communication Solution
The VPU-1 amplifies natural voice projection, enabling real-time communication without requiring radio equipment for every listener—overcoming the limits of speech diaphragms and radio-only setups.
Optimized Deployment
- Connect: Plug 3.5mm microphone jack into VPU-1
- Test: Perform battery check and power on
- Mount: Secure via MOLLE clip to gear
- Adjust: Set volume to prevent feedback
Note: Acoustic feedback may occur if the VPU is placed too close to the microphone. Reduce volume or increase the distance to eliminate feedback.
Storage & Maintenance
- Store in a cool, dry place away from direct sunlight (−20°C to 45°C / −4°F to 113°F)
- Perform battery tests every 6 months during storage
- Maintain 40–60% charge for long-term storage
- Lithium batteries can typically hold a charge for up to 12 months in storage
Certifications & Compliance
- PPE Directive 89/686/EEC
- EMC Directive 89/336/EEC
- ČSN EN 140 (CBRN)
- UL 94 V2 (flame retardant)
Payment & Security
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