Specification: 

• Brand new    

• Measuring range: DC 0V--30V

•  Display Color: Green 

• Display: three 0.56 "digital tube

• Measurement accuracy: ±1%

• Refresh rate: about 300mS / times

• Input impedance: > 100KΩ    

• Operation Temp: -10℃-+65℃

• Size: approx. 48 x 29 x 22mm (L x W x H)    

• Cable length: approx. 20cm 

• color : green

• Input range: DC4.70-30.0V(green) (Max Input: DC 30V. The device can be damaged if input is over 30V)

• Working Current: green< 18mA

Wiring:    

• Red: power supply +.    

• Black: power supply -, measure -.    

• White: measure +.