为了能及时地将卫生间内的异味排出，很多家庭都装了换气扇，但一些来客或小孩常常忘记打开换气扇。为了解决这个问题，设计了一种能自动控制换气扇和照明灯的电子装置，这样不给上卫生间的人增添任何麻烦，又能自动换气和开、关灯，节能而方便。-In a timely manner in order to be able to smell from inside the room, many families have installed a fan, but some visitors or children often forget to open fan. To solve this problem, designed a kind of automatic control of fan and lighting electronic devices, so do not give people room to add on any trouble, but also automatic ventilation and open, lights are turned off, energy-saving and convenient.