The AH-JL-01 AIS positioning life jacket light is a portable emergency position indication alarm device designed by Jiangsu Anhang Shipbuilding Equipment Co., Ltd. It can be installed on life jackets, insulated life jackets, or carried by oneself. The device adopts the MSC standard of existing life saving equipment position lights and integrates AIS equipment technology on this basis. On the basis of line of sight search, it increases the number of people in distress who actively send position information, This information can be received by all AIS receivers, AIS collision avoidance navigators, ship automatic identification systems, navigation warning aircraft, onshore base stations, and buoys installed within a range of 4 nautical miles, achieving rapid rescue response and improving search and rescue efficiency. The device consists of AIS transmission circuit, GNSS positioning, antenna, battery, and other components, and can work continuously for more than 48 hours in emergency situations. It can be widely used in various search and rescue systems. The AH-JL-01 terminal is designed with ultra-low power consumption and can be valid for up to 5 years.