Type 1:

Brand new and High quality
It can measure the USB-powered devices empty and.
Easy to use and practical.
Compact and easy to carry, no additional power supply, plug and play.
It can easily measure the output voltage of the USB port and the device operating current or load voltage
Detect any USB charger such as PC USB, home charger, car charger.
Wide range of applications, any phone, any electronic product, Easy to use.
Suitable for factories, laboratories and personal use.

Specifications:

Detection range:
Voltage: 3.5V-7V error ±1%
Current: 0A-3A error ±1%
Size: 52mm x 22mm x14mm
Net weight: 17g
Color: Transparent

Type 2:

Available charging, data transmission
Voltage, current switching display
Measuring range: DC 3~8V
Current: 0~3A
Error: 1%
Screen size: 0.4inch
Dimensions: 2.68x0.91x0.47inch (6.8x2.3x1.2cm)
Color: Silver + Translucent blue
Compact and easy to carry
Power free, plug and play
It can easily measure output voltage of the USB port and the device operating current or load voltage

Type 3:

It can measure the USB-powered devices empty and .
Easy to use and practical.
Compact and easy to carry, no additional power supply, plug and play.
It can easily measure the output voltage of the USB port and the device operating current or load voltage
Detect any USB charger such as PC USB, home charger, car charger.
Wide range of applications, any phone, any electronic product, Easy to use.
suitable for factories, laboratories and personal use.
Detection range:
Voltage: 3v-7v error 0.1v
Current :0-2.5A error 0.01A
Specifications:
Size:63*21-34*15mm
Net weight:15g
Package weight:25g
Case Color:Blue

Type 4:

USB Current Voltage Tester
Condition: New
Measuring range: DC 3v - 9v, current: 0-3a (error: ± 1%)， 5a biggest support
5a current (if more than 3a, error will be larger than 3%)
Color is shown as pictures
PLS NOTE that due to lighting effects, monitor's brightness/ contrass settings ect, there could be some slight differences in the color tone of the pictures and the actual item!

Type 5:

Voltage range: 3.5V-10V (accuracy 1%)
Current range: 0-3.3A (accuracy 0.4%)
Dimensions: 53 (L) * 19 (W) * 9 (H) mm
Display data: voltage and current power capacity value
Sampling resistance: 50mΩ
Measurable capacity range: 0-50000MHA (capacity comes with memory function)

Own consumption: <12mA

Weight: <15g

Display Material: 1.04-inch OLED screen (display color: white)

Can easily measure the USB ( PC USB, cell phone charger, car charger , mobile power , etc. ) port and device operating current and the output voltage charge-discharge capacity , performance, and to judge the performance of the charging cable charging equipment is meet the requirements !

Package Included:

1PCS USB Charger Doctor voltmeter ammeter Amp Voltage Tester Detector NEW