3pcs 12 in 1 Transparent USB Tester DC Digital Voltmeter Amperemeter Voltagecurrent Meter Ammeter Detector Power Bank Charger Indicator

Technical parameters: Voltage measuring range: 3.60V ~ 32.5 V Resolution precision: 0.01 V Current measuring range: 0.00A ~ 5.00 A Resolution precision: 0.01 A Power cumulative range: 0 ~ 999999 WH Resolution precision: 0.001 Wh Capacity range: 0 ~ 999999 mAH Resolution precision: 0.001 Ah Temperature: 0 ~ + 80 Resolution precision: 1 D+ Voltage: 0.000V ~ 2.999 V Resolution precision: 0.001 V D- Voltage: 0.000V ~ 2.999 V Resolution precision: 0.001 V Load impedance: 0 ~ 999 ohm Resolution precision: 1 ohm Power metering range: 0 ~ 299.999 W Resolution precision: 0.001 W Timing maximum time: 999 H 59 M 59 S Resolution precision: 1 S Time to refresh: > 500 ms/time > 500 ms/times Measurement rate: 0.5 times/s Use large equipment of the same metal manganese bronze sampling resistor (1.0 mm diameter metal manganese bronze material 0.5W, the time will be calculated. Important Tips: 1) Backlight default time is 10S time, through the key button, switch to the BL interface: 10S time interface, double-click or three-click to increase(+) time or decrease(-) time the backlight time, and the same time backlight switch "BL: OFF(time) ~BL: ON( time) 1S ~ 59S range" Increase(+) or three-Click(-) after the reduction, then long press key is a continuous increase in the reduction.To meet the individual needs of users. BL: 10S USB tester default backlight time is 10S, 10S automatically turn off screen brightness BL: ONUSB tester backlight is on, always on BL: OFFUSB tester backlight is off, there is no backlight 3) When the ambient temperature changes or the outside heat conduction to tester causes the current to not return to zero and the display shows 0.01A or 0.02A or otherwise, Please Hold on the key button then insert to USB Charger It can make the current temperature of the ambient current zero calibration, After the zero can more accurate measurements. And when in Zero calibration, the output cannot have any load current consumption, so USB tester display 0.00A Packing includes: 3 x Digital USB Voltmeter Tester