➢Step descriptions:

✦Step 1:-Prepare 1x led, 4x transistor, 1x buzzer, solder them together.

✦Step 2:-Make a circle with copper wire, solder it.

✦Step 3:-If someone is close to it, it will automatically alarm.

Product list:

『Buzzer 』   view more ⇒ https://www.utsource.net/sch/buzzer

『LED』  view more ⇒ https://www.utsource.net/category/led-lighting-1.html

『IC chips』view more ⇒ https://www.utsource.net/category/elec-component/ic-chips-1.html

『Transistor』view more ⇒ https://www.utsource.net/category/elec-component/transistors-1.html

Video on Youtube: