K1硬开关，按下要手动关掉，K2是个轻开关，按下自动弹起 K1按下，LED亮100 ，不管K2什么状态，LED一直亮100 。-K1 hard switch, press to manually switch off, K2 is a light switch, press the auto pop-up K1 is pressed, LED lights 100 percent, no matter what state K2, LED is always on 100 .