How to Make a PIR Sensor Alarm at Home By thachn2 in CircuitsElectronics8114Save PDFFavoriteIntroduction: How to Make a PIR Sensor Alarm at HomeBy thachn2thachFollow More by the author: About: hello everybody More About thachn2 »what you need.+1 transsitor 2SC1815+1 relay 6v+1 PIR sensor+1 LED 10wand this my video