Features 1、More than 30 functional ranges are available. Overload protection for all ranges. 2、Low battery voltage indication, data hold function, automatic power off. 3、Not only measures AC/DC voltage, AC/DC current, resistance, frequency, capacitance, duty cycle. 4、Application: homes, schools, metallurgy, communications, manufacturing, national defense, electric power, chemical industry, etc. 5、Best choice for electric circuit/equipment maintenance and repairing. Specification Description: UT139 Series digital multimeters are newly designed to offer users better performance and higher safety rating. Totally over-load protection and unique structural design make it new type of multimeter with high performance/ price ratio and a best choice for electricians used in electrical maintenance and repairing. Features: More than 30 functional ranges are available. Overload protection for all ranges. Application: homes, schools, metallurgy, communications, manufacturing, national defense, electric power, chemical industry, etc. Best choice for electric circuit/equipment maintenance and repairing. Specification: Brand: UNI-T Basic function Range Basic Accuracy Model(Optional) 40mV/400mV/4V/40V/400V/600V 60mV/600mV/6V/60V/600V 40mV/400mV/4V/40V/400V/600V 60mV/600mV/6V/60V/600V ±(0.8%+3) DC Current(A) 200μA/2000μA/20mA/200mA/2A/10A ± (1.0%+2) 400μA/4000μA/40mA/400mA/4A/10A 600μA/6000μA/60mA/600mA/6A/10A ± (0.8%+2) AC Current(A) 200μA/2000μA/20mA/200mA/2A/10A ±(1.2%+2) 400μA/4000μA/40mA/400mA/4A/10A 600μA/6000μA/60mA/600mA/6A/10A ±(1.0%+3) Resistance(Ω) 200Ω/2KΩ/20KΩ/200KΩ/2MΩ/20MΩ ±(1.0%+2) 400Ω/4KΩ/40KΩ/400KΩ/4MΩ/40MΩ 600Ω/6KΩ/60KΩ/600KΩ/6MΩ/60MΩ ±(0.8%+2) Capacitance(F) 9.999nF/99.99nF/999.9nF/9.999μF/99.99μF/999.9μF/ ±(4.0%+5) 9.999mF/99.99mF Frequency(Hz) 9.999Hz~9.999MHz ±(0.1%+4) Temperature(°C) -40 °C ~1000°C ±(1.0%+3) Temperature(°F) -40°F~1832°F ±(1.5%+5) Special function Max. display 1999 5999 Auto-range Yes Yes Manual-range Yes Yes True RMS Yes Yes Frequency respond(Hz) 45Hz ~400Hz 45Hz ~1kHz AC VFD measurement Yes Yes Duty ratio 0.1%~ 99.9% Yes Diode test Approx. 2V Approx. 3V NCV Yes Yes Battery test 1.5V / 9V Yes Automatic power off Approx. 15min Yes Yes Off buzzing Yes Yes Relative measurement Yes Yes Min./Max. value Yes LCD light Yes Yes Input protective 600Vrms Yes Yes Input resistance Max. 1GΩ Yes Yes General features Battery type 2*AA1.5V(NOT INCLUDED) LCD size Approx. 5.8*3.6 cm / 2.3*1.4inch Color Red + Black Weight 560g Size: Approx. 17.5*8*4.5cm / 6.9*3.1*1.8inch Package Included: 1 x Multimeter1 x Multimeter 1 x Test Lead 1 x Temperature Probe(UT139C only) Package List