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Sndway SW-525G Wall Mounted 3" LED 9.6" Display Sound Level Monitor with Alarm & Data Logger - Sound Level / Noise / Vibration
M5Stack - Masayuki Yoneno took it up a notch with this smart meter. It consists of #StickC Plus M5Core and Wi-SUN BP35A1 to monitor power consumption. The graph shows the instantaneous power,
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