噪音测试比较
我这里直接上视频进行比较1，机械继电器，每次状态变化都“哒哒”的响起，夜深人静时，突然来了穿高跟鞋的美女。http://v.youku.com/v_show/id_XMzgyMTA3NDgwMA==.html?spm=a2h3j.8428770.3416059.1
http://v.youku.com/v_show/id_XMzgyMTA3NDgwMA==.html?spm=a2h3j.8428770.3416059.1
2，光继电器，比较安静，静静躺着的睡美人。
http://v.youku.com/v_show/id_XMzgyMTA3NDM4MA==.html?spm=a2h3j.8428770.3416059.1
http://v.youku.com/v_show/id_XMzgyMTA3NDM4MA==.html?spm=a2h3j.8428770.3416059.1
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