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SYMFONIA School Science Project Working Model Solar Alarm Kit for Students,1 Piece 6V 100mA Solar Panel, 1 Piece Buzzer, 1 Piece 2 Pin Rocker Switch, 2 Piece 2 Color Wire. Ready to run Solar Alarm project kit When sunlight falls on Solar panel, Sound Buzzer produces Beep Alarm Pre-soldered Solar panel with sound buzzer and switch Solar energy to sound energy Best for school science projects and SYMFONIA presents a best way to learn about solar energy concept with easy to use Solar educational kit. The kit includes pre-soldered solar panel with switch and sound buzzer alarm. When you put the solar panel in sunlight, the sound buzzer produces beep-Alarm-Sound or you can say when sunlight falls on solar panel, it produces sound alarm. You can use switch to turn ON-OFF the sound in sunlight.