Cov neeg soj xyuas sitsepeaker polarity
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Tus ntsuas hluav taws xob rk5991n microphone polarity tester
RK5991N Microphone Tester tuaj yeem paub qhov txawv thiab tsis zoo ntawm cov khoom lag luam nrov nrov, cov neeg siv hluav taws xob txav ncaj qha thiab nrawm.
Ntsuas cov mem tes dav: 0.4ms
