Features:
Update frequency: about 200ms
Power supply  scope: DC4.5-30V +
Measurement range:10A/50A/100A  30V/100V 
Measurement accuracy: 0.1%
Storage temperature: -10 °C ~ +65 °C
Operating current:＜20mA
Operating Humidity: 10 ~ 80% (no  condensation)
Size: 47mm*23mm*18mm
Sun exposure: no direct exposure
Classification：

30V10A

30V50A

100V10A

100V50A

100V100A

Note:You can choose which you need!!
Package Included:

1  x 0.28'' Voltmeter Ammeter LED Panel