Features: 1. Current, voltage, power, power, capacity, capacity, resistance, timing time, capacity group number, Celsius, Fahrenheit, quick recognition, and many other parameters, a screen display of a variety of parameters. 2. It can detect the charging status of the electrical appliances in real-time, and monitor the charging voltage and current in real-time and other parameters information at a glance. 3. Display on/off function: through the multifunctional key short press switch interface to the rest screen interface for the off display, but also can be normal to the device charging night charging. 4. Test a variety of USB and Type-C digital devices: easy to test a variety of chargers, data cables, rechargeable batteries, notebooks, cell phones, Type-C digital devices, and so on. 5. A variety of fast charging protocols automatically detect, fast charging recognition detection covers almost all fast charging protocols, and can meet the needs of all types of cell phone users. Specifications: Voltage measurement range: DC 4.5~36V Current measurement range: 0-5A/0-8A Capacity totalization range: 0-99999mAh Power Accumulation Range: 0-99999mWh Power measurement range: 0-150W Impedance measurement range: 1-999.9Ω Temperature measurement range: 0-80℃ Operating Temperature: -10~60°C Working humidity: 10~80%RH (no condensation) Working air pressure: 80~106kPa Multi-function button operation instructions: Short press mode button 1. is to switch the screen 2. Quickly triple-tap the switch button to reset the power to zero (mWh) and the timing reset to zero the current group (0.00) 3. Long press the on/off button for 2 seconds to change the accumulated data storage group number (NO.X). Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Material: plastic colour: Black Pack