Simple connection: the voltage ampere monitor gauge is powered by the circuit being measured, no need to connect extra power source,voltage monitor,car battery tester
Ammeter voltmeter module:with reverse connection protection if the positive and negative poles are reversed, display will not be burned out, car insulated multimeter
Applications: suitable for automotive/electric car/motorcycles battery monitoring or other products voltage measurement,led display voltmeter, amp meter
LED digital display voltmeter:this voltmeter ammeter has handy connection and wide application for example, it can be applied to monitoring storage battery, adjustable power supply, or voltage and changing state of other device,battery testers
Measuring range: the voltage range is 0-100v, and is 0-10a, meter,voltage and display