SMTONOFF 3 Phase 4 Wire 380V 100A Tuya WiFi Smart Bi-Directional Energy Meter

SMTONOFF 3 Phase Energy Meter Features and Protection Technology

The SMTONOFF 3 phase energy meter measures power consumption and generation simultaneously across all three phases with 100A capacity and 380V rated operation, delivering accurate kWh data to your smartphone via Tuya or eWeLink platforms. Real time power monitoring displays voltage, current, frequency and power factor for each phase independently, letting you identify efficiency issues before they escalate. Over under voltage protection automatically triggers alerts when phase voltages exceed safe operating ranges, preventing equipment damage and extending system lifespan in unstable grid environments. Bi-directional kWh measurement tracks energy flow in both directions, essential for solar installations and energy management in modern smart homes and industrial facilities. The device integrates seamlessly with Tuya and eWeLink ecosystems for remote control, scheduling and historical data analysis from anywhere globally.