Protect Private Conversations
The Portable Masking Kit (PMK-8) protects private conversations by injecting voice masking noise into structural surfaces, gaps, and free space, making conversations unintelligible to anyone outside the room. Portable Masking Kit creates a perimeter of masking noise that defeats acoustic leakage and eavesdropping devices like:
- Wired wall devices
- Contact microphones
- Hidden audio transmitters
- Laser/reflections from windows
Efficiency: This kit provides a temporary audio security solution when you need to get in, set up voice masking security, and get out.
Usability: Create a Voice Masking perimeter to protect against structure bound audio threats
Portability: The Portable Masking Kit, PMK-8 packs 8 Voice Masking Generator sets (unit, transducers, cables) in a hard shell case for easy transport with wireless charging in the case.
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Features
- Quick deployment – easy to configure/setup
- Portable – packs in a case for easy transport
- Protects against structure bound audio leakage
- Compact – each small Voice Masking Generator powers 2 transducers
- 16 transducers, 8 internal VMG speakers
- Load custom voice recordings to match those speaking in the room
- 20 hour battery life
- 4W external speaker output
- Line out
- Rechargeable lithium-ion battery
- Multiple mounting options
- 32 GB memory for storing custom audio files
- Selectable HVAC or scrambled speech/custom audio output
- Adjustable output volume
- Inductive wireless charging built into case
Applications
- Hotel Rooms, offices, conference rooms
- Technical Surveillance Countermeasures (TSCM)
- Speech and conversation privacy
- Eavesdropping prevention
- Intelligence protection
- Executive protection
Specifications
POWER
Unit wired power/charging/programming port: USB-C @ 5 V, 3.1 A
Wireless Qi charging rate: 5 W
Battery: 3.7V 5000 mAh Li-Ion
Battery life: up to 24 h at half volume, up to 12 h at full volume
Typical charge time: 9 h
Case chargers: USB-C PD with included wall adaptor @ 20 V, 3 A (adaptor supports both 120 and 240 VAC)
AUDIO OUTPUT
Internal speaker and push terminal line out
Peak output power: 4 W
Line out amplitude: 1 V pk-pk
Audio frequency range: 100 Hz – 15 kHz
Max SPL: 98 dB at 4 ft
MECHANICAL
Unit dimensions: 4.6 × 2.6 × 0.9 in / 12 × 6.5 × 2.3 cm
Unit weight: 5.7 oz / 160 g
Case dimensions: 6 × 15 × 18.5 in / 16 × 38 × 47 cm
Case/contents weight: 16 lbs / 7.3 kg
ENVIRONMENTAL
Battery charging temperature: 0 to 23 °C (wireless), 0 to 45°C (wired)
Storage temperature: -20 to 60 °C
Operating temperature: -10 to 40 °C
Downloads
| PMK-8_brochure (1 MB) | |
| Portable Voice Masking User Manual (2 MB) |
Included Content
The Portable Voice Masking Kit is a deployable set of Voice Masking Generators the can be installed strategically in a target area requiring audio security. The PMK-8 includes:
- 8 VMGs (Voice Masking Generators) with built-in speaker
- 16 Transducers/emitters
- 10 speaker cable sets (3ft/.9m lengths per transducer)
- Hard shell case with built-in inductive charging
- Mounting strips