Démonstration d'énergie solaire
Gelsonlab HSPEN-016 Démonstration d'énergie solaire , Solar Power demonstration for teaching use ,Solar Powered Appliance Material
This education Démonstration d'énergie solaire model can demo the solar powered electricity used for different ways,can make Miniature motor working, light emitting diode, make Buzzer buzzing...it's a very good demonstration for educational.