Over Under Voltage Overcurrent Protector Multifunctional Adjustable Voltage Current Protector Item Type: Under Over Voltage Current Protector Material: PC Flame Retardant Effective Voltage Range: AC80-300V Accuracy 1% (calibratable, higher accuracy) Effective Current Range: AC0.1-63A Accuracy 1% (calibratable, higher accuracy) Frequency Range: 40-70Hz Accuracy 1% (calibratable, higher accuracy) Screen Refresh Rate: >1000Hz Meter Update: 0.1-1.0s Accuracy 1% (screen value update) Metering Algorithm: Root Mean Square/RMS (should be used for mains power grid) Over and Under Voltage Hysteresis: 5V (fixed 5V hysteresis) Timer Range: 1-999s Accuracy 1% (user settable) Action Time: 0.1-10.0s Accuracy 1% (user settable) Overvoltage Guard, Can be turned off Undervoltage Guard, Can be turned off Overcurrent Guard, Can be turned off Continuous Overcurrent Counting, Can be turned off Wide Voltage Range: Over Voltage 130-300V, Under Voltage 80-210V, When set incorrectly, always in protection state, fault indicator lights up Fast Power Failure Guard: Front end power grid abnormal ignition, power failure, protection device action Manual, Automatic Recovery: After manually closing the protection, must be manually enabled Blades Switch Function: When guard function is turned off, the relay remains unchanged and no longer performs any action, but the switch button remains effective Multiple Display Modes: Voltage, Current, Frequency, Visual Power, etc. Can be switched by key mode. Setting Lock: Prevent accidental modification of parameters, cannot achieve guard objectives. DC Mode: When using DC, current, power is invalid. Energy Saving Mode: When the protector is not active, reduce the brightness of the digital tube to save energy. Embedded RTOS: Improve system performance and stability, high maintainability.