Melody Card Happy Birthday COB Module
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Description: Complete Card Melody Unit- 'Happy Birthday' Melody IC COB, battery and piezo all ready to play. As found in Christmas cards and books which play when you open the page. Self-adhesive backing. Tune repeats continuously while power is connected. Total of 128 notes. Cmos LSI chip in small chip-on-board PCB. There could not be fewer external components! A 3V battery and direct drive to piezo speaker included. Ready to play! The oscillator is build-in. 128 notes already programmed in ROM. You can modify the switch or add your own. Also you can take the output to an amplifier. The ideal building block for door bells, alarms etc. Tune in this unit: Happy Birthday.
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