Raymarine LifeTag is a wireless crew monitoring and man-overboard alert system. Utilizing the latest in RF wireless technology, the LifeTag base station can monitor up to 16 different LifeTags simultaneously. In the event a tagged person falls overboard, the RF link between tag and base is broken, and an onboard audible alarm is sounded. The LifeTag system will also activate if a tag moves out-of-range of the base station (typically 35 feet.)
