DC Solar Volt Amp Meter DC 0-500V 50A Voltmeter Ammeter LED Dual display

Voltage meter range: 0-500V Current meter range:0-50A  (Shunt included 50A) LCD :SMD Internal resistance of the voltmeter: 2MΩ Internal resistance of the ammeter: 0.03Ω Working voltage (Input Voltage) :  DC5-12V  *2 Operating temperature: -10℃~60℃ Working current:  <20mA Refresh rate:  3 times /second The net weight: 22g Display mode:3 bit 0.28 inch LED Overall dimensions:48MM*29MM*21MM(L*W*H) Opening size: 45.5mm*26.5mm Lead wire length: 13CM The decimal point can be moved automatically 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. 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 Group B: black wire: the negative electrode of the tested power supply Red wire: the negative electrode of the load to be measured. Warning: not connected to the power supply positive pole, Package Contents 1 X Volt Ammeter 0-500V 1 X Shunt (0- 50A ) 1 X Cables for Shunt 1 X Cable for Volt Ammeter