AZDelivery 0.28 Inch Mini Digital Voltmeter with 7 Segment LED Display 2.5V 30V, Voltage Display, Measurement Module, 4 Colour compatible Arduino including E Book!

✅ Precise measurement: Voltages of 2.5-30V can be safely and accurately measured with this Mini Voltmeter. ✅ Several applications: The Digital Mini Voltmeter can be used to measure the voltage of 18650 batteries or car batteries with the help of the module's welded cables. ✅ Built-in potentiometer: With the Voltmeter you can make precise measurements easily and quickly, and through the integrated potentiometer you can make an exact calibration. ✅ Four digital voltmeters: The voltmeter contains 4 digital voltmeters, each with a different colour, one colour for each application. ✅ This product includes an E-Book that provides useful information on how to begin your project, it helps with a quick setup and saves time on the configuration process. We provide an array of application examples, full installation guides and libraries.