Features: Measure Voltages, current, power, power factor, frequency, and energy in a single device. The measuring ranges AC40 to 300.0V/250 to 450V without limitation, and it can be used in power, photovoltaic and inverter current. Make from Flame retardant materials, strong, Enduring, and safe to use. Multiple Electric Parameters Measurement; Power failure memory function. Convenient operation. Easy installation on DIN rail for a neat and organized power monitoring setups. Specifications: Materials: Plastic shell Styles: AC40 to 300.0V/250 to 450V Size: about 54x80x48mm/2.13x3.15x1.89inch Measurement accuracy: 1% ±2 words Current ranges: 0.1A-99.9A Frequency: 220~50Hz Measurement Ranges: Voltages: AC40.0-300.0V Current: 0-100.0A Frequence: 45.1Hz – 65.0Hz Electricity: 0.00-9999Kwh Active power: 0-30000w, 0-45000w Power Factor: 0.00-1.00PF Package Includes: 1Pc Electric Energy Frequency Meter note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to difference between different monitors, the picture may not reflect the actual color.