The vibration alarm uses the principle of closed-circuit to complete the small electronic production of sound, light and electricity. When the small screw hung in the air is shaken, it will touch the metal ring at its upper end, and then the light-emitting diode will keep flashing, and the speaker will sound, which will act as an alarm.
Material: plastic, metal accessories, electronic components
Type: STEM toys, DIY kits
Suggested Age: 9 years and up
Batteries: 2*AA (not included)
Package: PE ziplock bag*
*Some orders are individually packaged in cartons, but this is not guaranteed.
Note: this is a DIY kit, you need to assemble it
WARNING: CHOKING HAZARD - Small parts. Not for children under 3 yrs.