一.FEATURES功能叙述上电OFF，KEY换段触发；工作电压2.0~5.5V；闪烁占空比1/2，频率&plu***n;20%.第1段第2段第3段第4段YL1002EX-AL1闪(3.3Hz)L1亮L1灭、L2亮OFFYL1002EX-BL1闪(3.8Hz)L1灭L2闪(3.8Hz)OFFYL1002EX-CL1亮L1灭、L2亮OFFYL1002EX-DL1亮L1亮、L2亮OFFYL1002EX-EL1亮L1灭、L2亮L1亮、L2亮OFF)