| 摘要 |
A fire extinguisher accessory device for providing oral instructions for using a fire extinguisher comprising a housing, a digital memory circuit disposed inside the housing, wherein the digital memory circuit can provide oral instructions for using the fire extinguisher such as “pull,” “aim,” “squeeze,” and “sweep”; a speaker disposed on the front surface of the housing; an amplifier disposed inside the housing; and a pressure switch operatively connected to the housing via a lead, wherein when the pressure switch is compressed, the digital memory circuit is activated and provides oral instructions for using the fire extinguisher.
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