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PZEM 022 100A AC Digital Power Monitor Voltmeter Ammeter Frequency Factor Meter XK W2001 Adjustable Temperature Controller Socket with 1M Probe and AU Plug Implement power management by calling Implement power management by calling esp_deep_sleep_start() for extended battery operation eliminating the need for multiple separate components 5% voltage accuracy and 1% power accuracy with real time calculations for reliable energy auditing and compliance reporting
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