Features: Advanced PD3.1 Voltage starts with immediate color LCD displays multiple protocols ( //) and measure voltage/current up to 28V for precise power testing and device diagnostics. double USB C inputs with touch protocol cycling and memory retention voltage switching between 5V 28V while trackings live electrical data via build in digital voltmeter/ammeter. Ideal for electronics engineers, quality manage team , and technology enthusiasts requiring protocol compliant charging verification during product development or manufacturing inspections. optimizes production line efficiency by testing power packs , adapters, and USB C devices across PD3.1/3.0/ standards using starts activated voltage simulation and load current monitoring. Features auto recall of last used voltage setting and measurement type , eliminating repetitive configurations during group device certification or laboratory stress test situation . Specifications: Material: plastic Size: about 3x10cm/1.18x3.94inch Package Includes: 1xVoltage Meter note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the differences between different monitors, the picture may not reflect the actual colorful of the item.