Description: Voltage measurement range: 4.50-24.00V Voltage Measurement Resolution: 0.01V current measurement range: 0.000-3.000A Current measurement resolution: 0.001A Capacity accumulation rannge: 0-99999 mAh Voltage measuring accuracy: ± (0.2% + 1 digits) energy sccumulation range: 0-99999mWh Current measurement accuracy: ± (0.8% + 3 digits) load impedance range: 1.5-9999.9 ? Time measuring range: 0-99h59min59s Specification: temperature range: -10 ? ~ 100 ? / 0 ? ~ 200 ? temperature measurement error: ± 3 ? / ± 6 ? brightness adjustment screen: 0-5 level Auto screen off time: 1-9mins Voltage Graph Range: 04.5-24.0V Current Graphic Range: 0.00A-3.00A Screen: 1.44 Inch Color LCD Display Fast Charge Recognition Mode: QC2.0 QC3.0 Refresh rate: 2Hz Product size: 71.2mm x 31.8mm x 12.4mm (UM24C) 71.2mm x 31.8mm x 11.3mm (UM24) Package Includes: 1x Tester 1x Iron box