Description:<br />Accurate readings， small deviation and would not get confusion. It can easily measure the output voltage， operating current and the charge - discharge capacity of USB ( PC USB， phone chargers， car use chargers， external power supply etc. ) And make sure the performance of the charging devices and the charging cable meet the standard.<br /><br />Main Features:<br />Test voltage: DC 3.2 - 10V<br />Test current: 0 - 3A ( 10A Maximum， If more than 3A， can not work continuously )<br />Operating current: less than 20mA<br />LED size: 0.28 inch LED <br />Display ways: Blue display current， red display voltage <br />USB extension cable: About 120mm<br />Measuring rate: Not less than 500m / times<br />Accuracy: 1% ( about 2 digits ) <br />Low supply voltage: +3.2 V<br />Maximum supply voltage: +10V<br />Working temperature: -10 centidegree -  +65 centidegree<br />Operating humidity: 10% - 80% ( non - condensing )<br />Working pressure: 80 - 106kPa<br />Sun exposure: No direct exposure<br />Output 1 function:<br />Data communication function: Mobile phones or other mobile device and a computer for data transfer<br />Charging voltage output function: Suitable for most of mobile phones， mobile power， tablet PCs and other USB devices， if with original charger or other with high current identify resistance charger， can also iPad， iPhone and Samsung S4 High Current charge. <br />Output 2 Function: <br />Charging voltage output function: Apple special type， only suitable for iPad， iPhone and Samsung S4 High Current charge.<br /><br />    Specifications<br />General<br />  Material: Plastic                                                  <br />                        Voltage: 3.2-10V                                                  <br />                        Color: Black                                                 <br />Weight/Size<br />  Product Weight : 0.030 kg                                                  <br />                        Package Weight: 0.06 kg                                                  <br />                        Product Size (L x W x H): 5.8 x 2.7 x 1.4 cm / 2.28 x 1.06 x 0.55 inches                                                  <br />                        Package Size (L x W x H): 14 x 8 x 2 cm / 5.50 x 3.14 x 0.79 inches                                                 <br />Package Contents<br />  Package Contents: 1 x USB Detecto                                                 <br /><br /><br /><br />                                            <br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br />                                                <br />