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I am such a guy who loves his thing very much and specially i don’t like any one coming to my work space without my prior knowledge,mostly if the persons are my sibling or young kids.I need a way to make an alarm to help me protect my space and guard it properly. But buzzer are too low in volume to implement.Until i got this . A freaking loud siren from DNA technology. It was so loud that i had to wear plugs before i had to turn it on.”

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