Simple Vacuum Buzzer Set
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Simply make the container vacuum by the vaccum syringe, sound of buzzer decrease
. Top of buzzer has a small ball, when the air particle become less, small ball
vibrate a little even stop to vibrate.
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¯uªÅ®e¾¹ container : 65 x 98mm dia. x Hª÷ÄÝ»\¥I ²©ö©â¯uªÅª`®g¾¹
Item no : JP 113-461 each set (¯uªÅ¸Á»ï¾¹ buzzer + ©â¯uªÅª`®gºÞ vaccum syringe )
Item no : JP 113-460 each (¯uªÅ¸Á»ï¾¹ buzzer )
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