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Electric Buzzer System


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Patulong naman po para sa school namin... pasend naman ung tamang schematic diagram ng buzzer system para sa school, ung buzzer na ginagamit pangsignal ng next subject period. kung pwede magsuggest naman sana kayo ng tamang specifications ng buzzer system na kailangan bilhin ung talagang malakas na parang fire alarm. tnx po sa makakatulong..

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