Features:1 Multifunctional meter: Multi-parameter function, can be used to test voltage, current, power, power factor, energy and frequency at the same time 2 LCD display screen: Equipped with a large LCD display that clearly and directly shows the current data, with a backlight function 3 Security assurance: Built-in overload alarm function, when more than the power alarm threshold, the backlight and power will flash for alarm 4 High performance: You can use the key to reset power and save data when the power is turned off without data loss 5 Easy handling: One-key operation, easy to meter and save the data and turn on / off the backlight The multifunctional meter can test voltage, current, power, power factor, energy and frequency at the same time with LCD display screen Specifications:Model: PZEM-022Measuring range: 0~100ASize: 89 6*49 6mm (length and width)Battery type: generalMeasurement accuracy: 1%Power supply voltage: 80~260V Package Included:1 pc * meter1 pc *Closed CTNotes:1 Please allow 0-1 inch error due to manual measurement Thanks for your understanding 2 Monitors are not calibrated same, item color displayed in photos may be showing slightly dif