Features: * Brand new and high quality * Made of high quality materials, sturdy and durable * Current, voltage, power, power, capacity, capacity, resistance, timing time, number of capacity groups, Celsius, Fahrenheit, quick identification and other parameters, multiple parameters can be displayed on o ne screen. * It can detect the charging status of electrical appliances in real time and monitor charging voltage, current and other parameter information at a glance. * Display on/off function: Short press the multi-function button to switch the interface to the rest screen interface to turn off the display. At the same time, you can also charge the device normally at night. * Test various USB and Type- C digital devices: Easily test various chargers, data cables, rechargeable batteries, notebooks, mobile phones, Type- C digital devices, etc. * Automatic detection of multiple fast charging protocols. Fast charging identification detection covers almost all fast charging protocols, which can meet the needs of all types of mobile phone users. Specification: scope: Voltage measurement range: DC 4.5~36V Current measurement range: 0-5A/0-8A Capacity cumulative range: 0-99999mAh Power accumulation range: 0-99999mWh Power measurement range: 0-150W Impedance measurement range: 1-999.9Ω Temperature measurement range: 0-80℃ Timing time: 999 hours and 59 minutes Input interface: 5A high current USB interface/Type-C interface Output interface: USB/Type- C USB D+ voltage range: 0~2.99V USB D-voltage range: 0~2.99V Refresh time: >500mS/time >500mS/time Measurement rate: about 0.5 times/second Display: IPS true color digital LCD screen Self-consumption current: