APP Download address 1.http://www.mediafire.com/folder/31bc15uhq8odb/E-meter 2. IOS APP: search E_test on iphone APP store to download 3. Android APP: search E-test at Google play to down load or https://www.mediafire.com/file/0jiio43c0vuu1wx/U_Meter-Phone_mobile.apk/file 1.This instrument can monitor voltage, current, capacity, electric quanity, power, load impedance, D+/D- voltage, charging time and other data of USB, and supports Qualcomm QC3.0 compatible QC2.0, BC1.2, and Apple 2.4A and other protocol quick charging voltage ranges, support OTG fucntion. 2.When the power is gt; 0.5W, the time will be calculated! We have two products to choose from, please choose the version that suits you 1. Non-Bluetooth version(Don #39;t support computer online apps or mobile apps) 2. Bluetooth version(Support computer online apps or mobile apps) 𝐒𝐏𝐄𝐂𝐒: Voltage measuring range : 3.6V~32.0V Resolution Precision : 0.01V Current measuring range : 0.00~5.10A Resolution Precision : 0.01A Capacity cumulative range: : 0~99999mAh Resolution Precision : 0.001Ah Power cumulative range : 0~999999mWh Resolution Precision : 0.001Wh Power metering range : 000.00~150.00 W Resolution Precision : 0.01W Impedance Measuring range : 1~999.9Ω Resolution Precision : 0.1Ω Temperature Measuring Range : 0~80℃ Resolution Precision : 1℃ Maximum Timing : 999Hours 59Minutes 59 Seconds Resolution Precision : 1s Timer Charging Reminder : Countdown 24 hours, set value arbitrary USB D+ Voltage Range : 0V~2.999V Resolution Precision : 0.001V USB D- Voltage Range : 0V~2.999V Resolution Precision : 0.001V Full Charger Reminder Parameters of Mobile : lt;2W/0.5Hours Time to refresh : 500mS/ times Measurement rate : 0.5 times/s Alarm Mode : Siren Sound+ Display Hints Product size : 61mm x 68mm x 10.8mm Self-consumable flow : lt;0.02A Working temperature : -10~+60℃ Working humidity: : 10~80(no doubt) Pressure of work : 80~106kPa Certificate: RoHS, CE Notes: Before use, please read the following instructions carefully. Because the PD charger has a special PD protocol, it will not work until the output is connected. Please connect your mobile phone and it will work normally! This product is a dual purpose USB and Type-c product. The USB interface is inserted into the USB charger, and the USB tester screen displays. The TYPE-C is inserted into the PD port, but it does not display. Please connect the TYPE-C output to your phone and it will be screen display!