Share How to make a Rain Alarm sensor (빗물 감지 센서 만들기)04:33 0 Share 0 Likes 0 Dislikes Published on February 1, 2017 This is a Simple Rain alarm circuit made of 3V battery, Buzzer, Transistor and junk plastics. Category: #Video Submitted by: Admin Tags:Alarm, Rain, sensor, 감지, 만들기, 빗물, 센서 About The Author Admin Related Posts