Technical parameters
Voltage meter range: 00.00-500.0V
Current meter range:0-199.9A
Internal resistance of the voltmeter:2MΩ
Internal resistance of the ammeter:200A/75MV
Working voltage: DC5-12V
Measurement accuracy: 0.3%（+/-2）
Operating temperatur e : -10℃~60℃
Working current: <20mA
Refresh rate: 3 times/second
The net weight: 170g
Display mode:4 bit 0.28 inch LED
Overall dimensions:48MM*29MM*21MM(L*W*H)
Opening size: 45.5mm*26.5mm
Lead wire length: 13CM
*1:The instrument can work in dc4-28v, but it will be hot when it is above 12V and reduce the accuracy and life. Please use 5-12V power supply.
*2:Error calculation method, the percentage of maximum range, plus the number in brackets
Wiring method:
There are two sets of lines
Three of the finer A: groups,
Two thick B: group,
Group A:
black wire: power supply negative pole
Red wire: power supply positive. Warning: the maximum can only be connected to 28V, more than damage
Yellow wire: connected to the positive electrode needed to measure voltage