SMTONOFF Tuya WiFi Smart Meter Single Phase Prepaid Digital Timer

SMTONOFF Smart Meter Single Phase Features and Technical Details

The bi-directional metering capability measures electricity flowing into and away from your installation, making this smart meter essential for properties with solar arrays or other distributed generation systems that feed surplus power back to the grid. Digital timer control allows precise scheduling of connected loads, enabling automation of water heaters, lighting circuits, and HVAC systems to coincide with low-tariff periods or renewable energy generation peaks. The prepaid meter function sets consumption budgets and automatically disconnects service when allocated credits expire, providing a practical solution for reducing utility debt in rental and managed housing situations. Power monitor integration displays instantaneous voltage, current, and consumption metrics through both the device LCD and the Tuya mobile application, supporting voltage ranges from 90V to 250V across both 50Hz and 60Hz electrical standards. The compact form factor and DIN-rail mounting simplify installation in existing electrical panels without requiring circuit reconfiguration or licensed electrician intervention.