市話的來電警示燈 - 插座
By Ida
at 2018-10-27T00:35
at 2018-10-27T00:35
Table of Contents
用市話插座的兩條線(如附件圖示),用來接一般的燈或警示燈,
一旦有電話時,會亮燈或閃爍燈,
https://imgur.com/a/nlLURfW
有方法可以實現嗎?
就是如同以下的效果:
https://www.youtube.com/watch?v=QcNBzk56T_E
--
一旦有電話時,會亮燈或閃爍燈,
https://imgur.com/a/nlLURfW
有方法可以實現嗎?
就是如同以下的效果:
https://www.youtube.com/watch?v=QcNBzk56T_E
--
Tags:
插座
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