High PrColor screen - 8 interfaces - Support USB, Type-C, DC5.5, micro-USB. It can measure the voltage and current changes during the operation/charging process of various DC inverters such as mobile phones, notebooks, desk lamps, routers, set-top boxes, etcracy display. Its measurement accuracy reaches 0.00001. Wide Applications:With the USB tester, you are able to test notebooks, car emergency power supplies, routers and other DC products, monitoring current, voltage, power, capacity, power and other state of charge in real time. The tester and mobile phone enable to realize APP. And charging status, various measurement data & graph can be transmitted and viewed on your phone. You can switch different measurement interfaces by pressing the button. Multi Functions:Functions include screen flip, fast charge recognition, energy capacity detection, temperature measurement, accuracy measurement, two-way current measurement and other data tests(temperature probe is not included). Safety Protection:Featured with over-voltage protection, over-current protection, low-voltage protection, charging time setting and auto-off function, the meter can detect safely and maximally protect the appliances from damaging. Voltage measurement range: 3.60V~32.00V Current measurement range: 0.00~5.10A USB load : 5V 1A/2A Limit 10W (do not exceed the use) Capacity accumulation range: 0~99999mAh Power accumulation range: 0~999.99Wh Power measurement range: 000.00~163.00W Impedance measurement range: 1~999.9ohm Temperature measurement range: 0~80 Celsius Timing range: 999hours 59minutes 59seconds Input interface: Type-C/Micro-USB/USB Timing charging reminder setting: countdown 24-hour arbitrary setting USB D+ Voltage range: 0V~2.99V USB D- Voltage range: 0V~2.99V Mobile phone full charging reminder