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The research was intended to develop the power-off equipment with a quality sound and to learn the user's satisfaction with the power-off device. The group is a population in ban Pong Fang, five of which are five of the five four-way houses, a 5-man house, a 5-person house with a total of 20 people. Education Tools is an on-off sound quality assessment equipment system. Satisfaction Questionnaire Statistics used in research are the average and the
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