A main technical parameters Rated working voltage: AC220V 50HZ over-voltage: AC250V (adjustable) Rated operating current: AC 0-5A 50HZ voltage protection value: AC187V output electrocution capacity: DC12V 10mA control: automatic optimization / cycle vote Cut / Coding Accuracy switching display Power Factor: 0.001 Sensitivity: 100mA Dimensions: 112mm * 112mm (L * W) hole size: 113mm * 113mm Protection class: Housing IP30 output circuit: 12 Road (24 Road) Ambient temperature: -25 ℃ - + 50 ℃ Relative humidity: at 40 ℃, ≤50%, 20 ℃ when ≤90% Altitude: ≤2500m Use: non-corrosive gases, no conductive dust, no explosive media presence, installation site without severe vibration, no wind and rain erosion. Second, product characteristics to calculate reactive power switching capacitance, high compensation accuracy. Power factor measurement of high accuracy, wide display range. Large-size LCD display, nice interface. With automatic operation and manual operation two ways of working. Real-time display of each parameter grid. Real-time temperature display, protective equipment running. Overvoltage, undervoltage, undercurrent, over-temperature, over, under compensation protection. With power-down protection, power-down data is not lost. Has a clock function, it can display the current time. Current signal is less than 0.01 ohm input impedance, high precision. The maximum number of output control circuit 24 road, to meet the user more loop compensation requirements. Providing 485 communication interface, built-in MODBUS-RTU protocol, which enables remote monitoring. (Optional). Active alarm output. (Optional) with automatic optimization, loop switching, control mode, enabling the encoding switching function. It can achieve more than 180 days of historical data storage capabilities. (Optional) This product can achieve the degree of electrical metering function. (Optional) with a voltage distortion protection. Inhibit harmonic function, anti-interference ability.