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A wailing alarm is a loud electronics device that produces sound similar to police siren. Siren is used to get other road users or drivers on the road out of their way. This project is on wailing alarm sound that sound effects like the siren of an ambulance or police car which features low-pitched tones alternately. This project will be comprised of the oscillator circuits of two set. Using IC-555 timer IC are main both unit. The first oscillator serve determine time period in changing a high-low sound tone, provide the proper frequencies about 0.5-1 Hertz. Then, second oscillator set the wailing alarm sound, before out to a speaker.
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Abstract should provide a concise summary of the Design and Construction of A Wailing Alarm, including the issue statement, methodology, findings, and conclusion.
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