The manufacturer directly sells the main control board of audible and visual alarm, and the PCBA circuit board of fire audible and visual alarm is customized

Model： The manufacturer directly sells the main control board of audible and visual alarm, and the PCBA circuit board of fire audible and visual alarm is customized

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label: Main control board

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The manufacturer directly sells the main control board of audible and visual alarm, and the PCBA circuit board of fire audible and visual alarm is customized