1、Automatic Safety: This device intelligently checks voltage levels, automatically disconnecting loads during overvoltage or undervoltage conditions and restoring power when normal levels are detected. 2、Customizable Settings: Equipped with a smart control chip, this protector socket allows you to set specific current and voltage levels, ensuring safety by automatically cutting off power when limits are exceeded. 3、Easy Installation: Featuring a plug and play design, this adapter installs swiftly and conveniently, providing safety directly to appliances like refrigerators against voltage fluctuations and surges. 4、LED Display: The clear LED screen provides real time updates on device status and easy use, while allowing you to calibrate voltage for accurate readings within a -20V to 20V range. 5、Versatile Usage: Designed for safety with a protective cover for ports, this socket is suitable for a wide range of appliances including refrigerators, air conditioners, and washing machines. Item Type: Automatic Voltage Current Safety Socket Material: Flame Retardant PC Effective Current Range: AC 0.1-63A Frequency Range: 40-70Hz Screen Refresh Rate: >1000Hz Meter Update: 0.1-1s Meter Algorithm: Root Mean Square/RMS Over Under Voltage Differential: 5V Timer Range: 1-999s Action Time: 0.1-10s Power On Delay: 1-999s (default 5s) Recovery Delay: 1-999s (default 30s) Over Voltage: 130-300V (default 270V) Over Voltage Recovery Value: 125-295V (default 265V) Under Voltage: 80-210V (default 170V) Under Voltage Recovery Value: 85-215V (default 175V) Over Voltage Action Delay: 0.1-10.0s (default 0.5s) Voltage Correction: -10%-+10% (default 0V) Over Current: 16A (default 63A) Over Current Action Delay: 0.1-10.0s (default 1.0s) Continuous Over Current Count: 0-20 times (default 0 times) Current Correction: -10%-+10% (default 0A) Frequency Correction: -2.5%-+2.5% (default 0Hz) Features: Over Voltage Current Safety Under Voltage Safety Over Current Safety Auto Reclosing Voltage Current Display Adjustable Voltage, Current Trip Auto Reclosing Time 1 x Adjustable Voltage Current Safety Socket 1 x User Manual