Sonoff Smart Stackable Power Meter (SPM-Main) Battery Powred or monthly statistics to optimize

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Sonoff Smart Stackable Power Meter (SPM-Main) Battery Powred or monthly statistics to optimizeSonoff Smart Stackable Power Meter (SPM Main) The Sonoff SPM Main is the central controller in Sonoff's Smart Stackable Power Meter (SPM) system, designed for advanced energy monitoring and management across multiple circuits. It's particularly suitable for environments like office buildings, shopping malls, server rooms, and industrial facilities. Key Specifications Model: SPM Main Power Supply: 100240V AC, 50 60Hz Network Connectivity: Wi Fi (2.