Use: Low voltage circuit maintenance of automobile , motorcycle, excavator,etc.</br> characteristic; Adopt innovative design; Large clip with auxiliary probe, flexiblewire and multi lamp pen. The utility model has the characteristics of strongdurability.light handle,convenient use and various functions. </br> Function: </br>1.Test fuse</br> 2.Positive and negative power supply of testing appliance </br>3.Test the performance of the battery</br> 4 Test LAN circuits. </br>5.Testing the performance of Hall sensor </br>6.Detection of short circuit fault</br> 7.distinguisn rea power ，virtual power.series power and poor grounding </br>8.Read fault code</br> 9. Test the idling circuit. ignition circuit of automobile engineFuel injection circuit and exhaust gas recirculation circuit 10.Test the automatic wave box circuit, air conditioning circuit. ABS circuit, etcWiper theft circuit. horn circuit. instrument circuitCruise circuit, skylight circuit, fan circuit, multiplex circuitCommunication circuit, rearview mirror circuit, seat circuit, exceptFog circuit and various circuits of motorcycles and excavators