Download File: 1. User Manual, Installation Instructions for PC Software, PC Software and App for Android: Please contact us for this, thanks 2. For iOS App: Search E_test in App Store for iPhone to download 3. For Android App: Search E-test in Google Play to download It can be used as a USB tester or a DC voltmeter. It is a high-end product created with the wisdom of the industry! It supports online testing for Android, iOS and PC system apps. Technical parameters: - Voltage measurement range: 5V ~ 32.0V - Current measurement range: 0.00 ~ 5.10A - Time measurement: 999 hours 59 minutes 59 seconds - Input interface: Type-C/Micro USB/USB - Output interface: Type-C/USB - Charging reminder setting: 24-hour countdown (any set value) - USB D+ voltage range: 0V ~ 2.99V - USB D- voltage range: 0V ~ 2.99V - Refresh time: > 500ms/time - Measurement rate: about 0.5 times/second - Alarm mode: siren sound + display prompt - Display type: 2.4-inch color screen with Chinese and English measurement interface - Self-consumption current: < 0.02A - Operating temperature: 10 C to +60 C - Operating humidity: 10 to 80 C (no condensation) - Operating temperature: 10 C to +60 C Pressure: 80~106 kPa Package contents: - 1 x UD24 tester - 1 x metal storage box - 1 x PD decoy trigger - 1 x temperature probe - 1 x DC cable - 1 x DC5.5 to alligator clip cable (male)