-The meter has a reading hold function.-The meter has an automatic shutdown function.Feature:Auto range and manual rangeFull range overload protectionSpecification:Maximum allowable voltage between the measuring terminal and the ground: 1000V DC or 750V ACFuse protection: uA, mA fuse FF200mA/250V; A fuse FF10A/250VWorking height: up to 2000m/6561.67ftDisplay: LCD displayMaximum display value: 9999 numbersSampling time: about 3 times/secBattery type: 6F22 9V battery (not included)Working temperature: 18-28Storage temperature: -10-50Material: ABSSize: 157x78.5x48.5mm/6.18x3.09x1.91inColor: Black, RedFuntion Range AccuracyDC voltage 999.9mV /9.999V /99.99V /9.999mV /99.99mV (0.5% + 3) DC voltage 999.9 V (0.8% + 5) AC voltage 999.9mV / 750V /9.999mV /99.99mV (1.0% + 10) AC voltage 9.999V /99.99V (1.0% + 3) AC current 999.9uA /9.999mA /999.9mA (1.0% +3) AC current 9.999A (2.5% +10) DC Current 999.9uA /9.999mA /999.9mA / (0.8% + 3) DC Current 9.999A (2.0% +10) Frequency 99.99Hz /999.9Hz /9.999kHz /99.99KHZ /999.9KHZ /5.000MHZ (0.1% + 2) Duty Ratio 0.1 - 99.9% (0.1% + 2) Resistance 99.99W (1.0% + 3) Resistance 999.9W (0.5% + 3) Resistance 9.999KW /99.99KW /999.9KW /9.