NASA Man MOBi Overboard Indicator - 3 Fobs | 4Boats

The NASA Man MOBi is a fail-safe transponder man-overboard system featuring a base unit and three active fobs to alert and identify crew or equipment that go overboard.

• Includes base unit plus 3 active transponder fobs
• Supports up to 8 transponders on a single base
• Base sequentially interrogates each fob; fobs broadcast presence
• Detects drop in signal level and triggers a high-intensity audible alarm
• Continual display of crew names, transponder signal levels and status
• Each fob powered by 3 × AAA cells — several weeks continuous use
• When base is off, fobs enter sleep mode for several years' battery life