Description: Electrical power USB capacity voltage tester current meter monitor voltmeter ammeter 3 in 1, 8 in 1, 9 in 1 three types Testers are widely used in the quality inspection of 3C digital peripheral products Display the state of charge, voltage, current, capacity, energy, power, equivalent impedance, temperature and other indicators Using high-precision thermistor sensor for more accurate measurements Specification: 8 in 1: 1. Voltage: DC 4-30V 2. Current: 0-5A 3. Time: 0-99hours 4. Power: 0-150W 5. Capacity: 0-99999mAh 6. Electical energy: 0-999.999Wh 7. Packet data:1-9group 8. temperature 9. Setup Key Easy to use: Click the button once check save packet data (Time, Wh, mAh). Long press button for 3 seconds to clear the current single set of saved data (Time, Wh, mAh). 3 in 1: QC2.0 3.0 Measuring range 4-20V(V) Input voltage 4-20V(V) Output voltage 4-20V(V) Ambient temperature -10-60(°C) Voltage measurement error 1% Easy to use The IN-input connects to the output port of the charger Reset-clear key, press 3-5 seconds to clear the screen OUT-output connected to the USB port of the data cable Input voltage display window (4-20V), accuracy +-1% Charge current display window (0-3A), accuracy +-1% Battery capacity display window (0-99999mAh) Working hours display window (0-99H) unit minutes Working time and space display memory function after power off 9 in 1: Time cut-off power supply Resistance: 0-999.99 Power: 0-150W Voltage and current: DC4-30V; 0-5A Timing, Delay: 0-99 hours; 0-24 hours Voltage over-current protection range: 30V / 5A Monitoring Content: USB voltage, current, power, power, timing and other data Electical Energy: 0-999.9WH Package Includes: 1 Piece USB Tester