LA2-D20 ( 0.1~3s)LA2-D22 ( 0.1s~30s)LA2-D24 ( 10s~180s)LA3-D20 ( 0.1~3s)LA3-D22 ( 0.1s~30s)LA3-D24 ( 10s~180s)LA2 是通电延时、 LA3 是断电延时