Mantis II Stereo Stethoscope

Mantis II Stereo Stethoscope

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This compact system is designed to intercept conversations through walls making it perfect for covert surveillance being conducted in hotels, offices, etc… It’s also an excellent tactical tool for entry teams, standoffs and recovery operations post natural disasters. Undetectable by the human ear, the included accelerometers (microphones) amplify micro vibrations that naturally occur on walls and construction of all types, when someone is speaking. In essence, the accelerometers turn ordinary construction into giant microphones. The result is high definition, stereo audio and methods can even be employed to provide approximate audible location of the speaker.

Each accelerometer has a dedicated audio channel and a balance control for each. A secondary audio output provides for simultaneous monitoring with headphones and connection to common audio recorders for evidence gathering. This system uses 4 alkaline AA batteries for a run time between 80 and 90 hours. Operation is simple and can be learned in minutes. For covert surveillance, MAXSUR recommends over-the-ear headphones and for tactical operations, ear buds or tactical com units with auxiliary line-level inputs.

System includes, amplifier, 2 accelerometers with 38” leads, and 2 spikes for semi-permanent mounting of accelerometers, carrying /storage case, two-year warranty and operation manual.

To learn more about the technology behind the MANTIS, click here to read Jake's article on through-wall microphone systems.