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1,thecurrentsensorchips:ACS712ELC-05B;2,pin5Vpower supply,on-boardpower indicator;3,themodulecan be measuredplus or minus 5amps,corresponding to theanalogoutput of185 mV/A;4,thereisnothedetection currentthrough,theoutputvoltageisVCC/ 2;5, PCBboardsize:31 (mm)x13(mm);Note: ACS712Halldetectionprinciple,when youuseto avoidmagnetic fieldimpactthis!Shipping list:ACS712module(5A)x 1