20A/50A/100A Digital DC 8-100V Power Current Voltage Energy Meter 4-in-1 Monitor Monitor: Voltage, Power, Current, Electricity Flame Retardant Material, Reliable and Safe Built-in High Precision A/D Transducer, Precise Measurement Wide Measurement Range Comes with Backlight, Short Press the Button to Turn On and Off the Backlight Applications: Electric Car, DC Power, Solar Energy, etc. Note: If you need the electronic PDF version of the English manual, please do so for Functions: Real-time display Real-time protection power failure for storage Overload alarm Backlight function One-click setting Specifications: 20A Working Voltage: 8.0VDC - 100VDC Maximum Power: 2KW Measuring Voltage: 8.0VDC - 100VDC Measurement Accuracy: Level 1 Maximum Current: 20A 50A Working Voltage: 8.0VDC - 100VDC Measuring Voltage: 8.0VDC - 100VDC Maximum Current: 50A Maximum Power: 5KW Measuring Accuracy: Level 1 100A Working Voltage: 8.0VDC - 100VDC Measuring Voltage: 8.0VDC - 100VDC Maximum Current: 100A Maximum Power: 10KW Measuring Accuracy: Level 1 Dimensions: Product Size: 90mm*54.5mm*28mm (3.54in*2.14in*1.10in) Open Size: 85mm*47mm (3.34in*1.85in) Package Included: 1*4in1 Electricity Monitor 1*English Manual 1*Shunt (After 100A or 50A specification)