SNDWAY SW525A 30 ~ 130db Digitales Schallpegelmessgerät Großbild Display Wandbehang
63,08 €
The default alarm value s 130. Users can adjust it from 50 to 130dB. Press "Button No.4 " to turn off alarm and the red light off; Press "Button No.4 " to turn on alarm and the red light on. Audio Outlet: when there is an alarm with 2KHz Signal, it can drive the loudspeaker to alarm.
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