[請問] 飯店房間門內的小開關是做什麼用的
http://m.imgur.com/onylbSK
http://m.imgur.com/e89q2SS
如圖，這個小開關是幹嘛用的呢？
扳開蓋子還有三個小開關可以切換
這幹嘛用的啊？
我這個莊腳俗還真的沒看過這個東西
先謝謝大家了
晚安！！
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