Decibel Monitor Tester LCD Digital Mini Sound Level Meter Noise Tester Diagnostic-tool Automotive Microphone (No Battery) GM1352 fashion watch this is an easy way

this is an easy way to get the UART console output to check the system status and log message

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7inch RAM 6GB ROM 128GB Brand Blackview Model BV9000 PRO Quantity 1 piece Material Metal/plastic Form Color Black + Gold Type Brand New Power Adapter EU Plug Housing Case Material Metal/plastic Time of Release 20180915 Network Type 2G

Color A Model - Quantity 1 set Material Metal Download Link - Packing List 1 x Expansion board

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Decibel Monitor Tester LCD Digital Mini Sound Level Meter Noise Tester Diagnostic-tool Automotive Microphone (No Battery) GM1352 fashion watch this is an easy wayDecibel Monitor Tester LCD Digital Mini Sound Level Meter Noise Tester Diagnostic tool Automotive Microphone (No Battery) GM1352 Specifications: Measuring Range: 30 ~ 130dBA Accuracy: 1. 5dB Resolution: 0. 1dB Frequency Range: 31. 5HZ ~ 8. 5KHZ Frequency Weighting: A Sampling Frequency: 2 times sec Digital Display: 4 digits Microphone: 1 2" Electret Condenser microphone Auto Power Off Low Battery Indication Max, MIN AND Hold Function Operating