Introducing the worlds smallest AIS MOB device with integrated DSC The MOB1 is compatible with even the most compact inflatable lifejackets. The MOB1 is intended to be installed within the life-jacket and will activate automatically on inflation, sending the first alert within 15 seconds. The integrated strobe light ensures maximum visibility in low light conditions. The MOB1 communicates with the vessel you have been separated from and other vessels in the vicinity (up to 5 miles range dependent on conditions). To alert rescue authorities, an alternative product the rescueME PLB1 communicates directly via a dedicated search and rescue satellite network.