1、High flame retardant and impact resistance, prevent overvoltage, undervoltage or current overload to damage the electricals 2、The overvoltage protection and undervoltage protection can be set according to the power status, very flexible and convenient 3、Intelligent control chip, can display real-time current, automatically cut off when the current or the voltage is exceeded 4、Good-quality high-definition display, the large-screen provides clearer handwriting 5、Over‑voltage action delay 0.5S, reset delay start for 3‑300S, voltage measurement accuracy is 0.01, very fast and accurate 1 x Voltage Current Protector Item Type: Voltage Current ProtectorMaterial: Flame retardant nylonRated Power Supply Voltage: AC220VWorking Voltage Range: AC80V-AC440VRated Frequency: 50/60hzUndervoltage Setting Range: 120-230vOvervoltage Setting Range: 230-300vOvervoltage and Undervoltage Action Delay: 0.5SReset Delay Start: 3-300SVoltage Measurement Accuracy: 0.01Rated Insulation Voltage: 400vEnvironmental Protection Level: 3Protection Level: IP20Altitude: Less than or equal to 2000 metersAmbient Temperature: -55℃-55℃Humidity: Less than or equal to 0.5/40℃ without condensationOvercurrent Setting: 1-63A (adjustable)