Instrumentation SO45 DC Ammeter Shunt 75mV Input 5A 10A 15A 20A 30A 50A 75A 100A 150A 200A 250A 300A 400A 500A 600A Black Circular 1Pcs Dimensions : 47*47mm Supply Voltage : DC Accuracy Class : 2.5 Model Number : SO45 Display Type : Analog Only