➢Step descriptions:

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

✦Step 2:-Connect 2 copper wires at the bottom.

✦Step 3:-Insert the copper wire probe into the diaper.

✦Step 4:-The baby will immediately trigger the sound and the light alarm after the bed wetting.

Products list:

『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: