SOTR Voice Projection Unit (VPU)

Ops-Core Voice Projection Unit (VPU)

The Voice Projection Unit is an optional accessory for Ops-Core tactical half-masks (SOTR with microphone). It amplifies the wearer’s voice, making it clearly audible even in noisy environments, thereby enabling team communication without the need for a radio. The unit can be quickly attached and removed without tools. It can be connected to push-to-talk devices and tactical headsets via the mask’s existing microphone port. This allows the wearer to switch at any time between local voice amplification and wired communication while remaining protected from respiratory hazards.

Features and Technical Specifications

· 3 volume levels: 79 / 83 / 87 dB

· Excellent speech intelligibility (Modified Rhyme Test 85.6–92.8%, per ANSI S3.2-2020)

· Powered by a CR123A battery, with a runtime of over 24 hours

· Easy to operate even while wearing gloves

· Microphone connection via standard Ops-Core communication cable (2-pin Nexus MP-101)

· Compatible with 150-ohm and 5-ohm microphones

· Fits all Ops-Core tactical half-masks and is compatible with all filters

· IP67 rating (operates normally after 30 minutes in 1 m of saltwater)

· Operating temperature: −40 °C to +55 °C; storage temperature: −40 °C to +70 °C

· Weight: 105 g, including battery

· Color: Black