ITEM NAME:Portable Mini IPS USB Voltage Current Capacity Meter USB Tester Detector Description: It adopts 0.96 inch IPS high-definition color liquid crystal display, 160 degree wide viewing angle, high brightness and long working life. AT34 supports the identification of QC2.0, QC3.0, APPLE2.4A/2.1A/1A/0.5A, Android DCP, and SAMSUNG fast charge protocol. 4-bit accuracy for more accurate measurements. With power-off storage. With a thermometer function, freely switch between Celsius and Fahrenheit. Specification: Size: 6.3x2x1 cm / 2.48x0.78x0.39 inch Measuring voltage: 3.70-30.00V Measuring current: 0-4.000A Model: AT34 Measuring range: 3.7-30 (V) Output voltage: 3.7-30V (V) Ambient temperature: 0-40 Â ° C Package Includes: 1 piece AT34 color screen tester.1 piece AT34 color screen tester. With power-off storage. Model: AT34.