In stock right now at EB Airsoft is the FMA Voice Activated Reaction Transfer Device, the name of their product  which is a dummy replica of the BlackBox Biometrics, Inc. Blast Gauge System. The original device is made for logging pressure and acceleration from exposure to explosive blasts such as IEDS, RPGs and other explosive devices. The LED lights actually provide triage data when the button is pushed. The logs are retrieved via Micro-USB for immediate analysis by medical personnel.