Features: 1. FNB58 USB tester is a high-reliability, high-safety USB voltage andcurrent detection meter and a mobile communication terminal fast chargingtrigger. 2. PD E-MARKER CABLE DETECTION function makes it read data information of line with E-Marker chip, and DASH CABLE DETECTION function makes it read DASH cable chip related data, also support cable internal resistance measurement. 3. Use external 16-bit ADC, PD protocol physical chip. Specifications: Type: Without BT function Color: Black Size: 42x82mm/1.65x3.23 inch Equipment Temperature: ℃/℉ Device Uptime: 99 days 23 hours 59 minutes 59 seconds Record Time: 99 days 23 hours 59 minutes 59 seconds Monitor Voltage: Ranges: 428V Resolution: 0.00001V Accuracy: (0.2‰+2) Monitor Current: Ranges: 07A Resolution: 0.00001A Accuracy: (0.5‰+2) Monitor Power: Ranges: 0120W Resolution: 0.00001W Accuracy: (0.5‰+2) Load Equivalent Internal Resistance: Ranges: 09999.9Ω Resolution: 0.0001Ω Accuracy: (0.5‰+2) D+/D- Voltage: Ranges: 03.3V Resolution: 0.001V Accuracy: (1.0%+2) Capacity: Ranges: 09999.99Ah Resolution: 0.00001Ah Energy Used: Ranges: 09999.99Wh Resolution: 0.00001Wh Cable Resistance: Ranges: 09999.9Ω Resolution: 0.0001Ω Package Includes: 1 x FNB58 USB Tester Notes: Please allow a little error on the size due to manual measurement. The color might exist slightly difference due to different displays. Do not connect the monitoring interface to a power supply exceeding 28V.