Automatic overvoltage and undervoltage protection device designed for household and shopping mall power distribution lines Key benefits Prevents damage to appliances and equipment by automatically disconnecting the circuit when overvoltage or undervoltage exceed the specified value. Restores power automatically: the device continuously monitors circuit voltage and closes the circuit again when voltage returns to the normal range, avoiding manual resets. Continuous monitoring and visible readout: three displays provide clear, ataglance information on current, voltage and electric degree for easy diagnostics and energy awareness. Simple fit for power distribution lines in residential and commercial environments — reduces downtime and the risk of electrical faults. How it solves common problems Eliminates the need to manually check and reset protective devices after a voltage event by performing automatic detection and automatic reclose. Reduces the risk of appliance failure from sustained voltage anomalies, extending equipment life and lowering costs. Provides immediate visibility into voltage, current and electric degree so users can confirm system status and respond to abnormal conditions promptly. What makes it stand out Automatic disconnect and automatic reclose based on realtime voltage detection — no user intervention required during normal recoveries. Three separate displays for clear, convenient viewing of current, voltage and electric degree. Compact footprint for easy installation in distribution panels. Performance and specifications Function: Automatic disconnection on overvoltage and undervoltage; automatic voltage detection; automatic reclose when voltage normalizes. Voltage accuracy <1 Displays: Three display panels showing current, voltage and electric degree. Intended use: Mainly for household and shopping mall power distribution lines. Size: 81*36*66 mm Typical use scenarios 1) Residential main distribution: Protects home appliances (refrigerator, heating/cooling, entertainment systems) from damage during sustained or low voltage events and restores power automatically when utility voltage stabilizes. 2) Retail or mall distribution panels: Guards lighting circuits, pointof equipment and refrigeration systems against voltage excursions while providing visible current, voltage and electric degree readings for maintenance staff. 3) Small commercial units: Monitors and protects circuits feeding sensitive equipment, offering automatic reconnection after transient grid disturbances to minimize operational interruption. Installation and compatibility notes Designed for use on power distribution lines in homes and shopping malls. Verify compatibility with your distribution panel and wiring practices before installation. Dimensions: 81*36*66 mm — compact for panel mounting. This device delivers automatic, reliable voltage protection with clear monitoring readouts to reduce equipment risk and simplify recovery after voltage events.