UNI-T UT139S Professional True RMS Digital Multimeter with LoZ Low-Impedance Input and LPF Low-Pass Filter Function

UNI-T UT139S Professional True RMS Digital Multimeter with LoZ Low-Impedance Input and LPF Low-Pass Filter Function
Features:

• The UT139S true RMS digital multimeter features a LOZ low-impedance input, LPF low-pass filter function, and an EBTN LCD display. With its high performance and low power consumption, it is designed to withstand harsh, cold measurement environments, making it the ideal tool for professional electricians.

• With a maximum pulse voltage rating of 6000V, the multimeter remains protected from damage even under severe conditions such as lightning strikes. It utilises a high-precision sub-milliohm resistor design; when the circuit experiences overvoltage, the voltage is clamped and excess current is absorbed to protect sensitive components.

• Adjustable stand: The stand on the rear of the unit allows for easy adjustment to the optimal viewing angle during measurements, making data observation more convenient.

• Dual-colour insulated protective sleeve: Comes with an ultra-soft rubber protective sleeve to enhance user comfort. The double insulation protects the unit, providing you with added peace of mind.

• LCD backlit high-definition display: The large LCD backlit screen features clear text and easy-to-read readings, making work effortless. Simply press and hold the LIGHT button to activate the backlight.

• Streamlined Body: The compact, streamlined body features smooth lines and an ergonomic design, ensuring a comfortable grip.

• NCV Non-Contact AC Voltage Detection: Detects whether a wire is live without damaging the insulation. When voltage is detected, the meter emits a beep and the NCV indicator flashes, whilst the display shows the detected electric field strength as a waveform.

• Features a black EBTK LCD display, characterised by high performance and low power consumption. Its excellent high-contrast negative display makes readings more prominent and easier to read, whilst its high cold resistance ensures normal display even in harsh and extreme environments, without affecting measurements

• The LPF (low-pass filter) eliminates the influence of high-frequency signals on measurement results. The built-in low-pass filter blocks signals above 1 kHz and attenuates those between 100 Hz and 1 kHz, enabling accurate measurement of fundamental signals from frequency converters or inverters

• LoZ low-impedance input: measures false voltages generated by large capacitive equipment. Large capacitive electrical equipment retains residual voltage after power is cut off; the UT139S can effectively discharge this residual voltage and accurately determine whether it is present.

Specifications:

Functions	Range	Basic Accuracy
		UT139S
DC voltage (V)	60mV/600mV/6V/60V/600V	±(0.5%＋2)
AC voltage (V)	60mV/600mV/6V/60V/600V	±(0.8%+3)
DC current (A)	600μA/6000μA/60mA/600mA/6A/10A	±(0.7%+2)
AC current (A)	600μA/6000μA/60mA/600mA/6A/10A	±(1.0%+3)
Resistance (Ω)	600Ω/6kΩ/60kΩ/600kΩ/6MΩ/60MΩ	±(0.8%+2)
Capacitance (F)	9.999nF/99.99nF/999.9nF/9.999μF /99.99μF/999.9μF/9.999mF/99.99mF	±(4%+5)
Frequency (Hz)	10Hz~10MHz	±(0.1%+4)
Temperature (℃)	-40～1000℃	±(1.0%+4)
Temperature (℉)	-40～1832℉	±(1.5％+5)
Features
Safety rating	CAT III 600V
True RMS	Yes
LCD display	EBTN
Display count	6000
LPF (ACV)	Yes
LoZ (ACV)	Yes
Diode	Yes
Continuity buzzer	Yes
Duty cycle	Yes
NCV	Yes
Sampling rate	3 times/s
Analog bar graph	31 segments
Range selection	Yes
Max/Min	Yes
Relative mode	Yes
Drop proof	1M
General Characteristics
Product color	Red and grey
Product net weight	345g
Product size	170×80×48mm

Package includes:

• 1 x Multimeter (without Battery)

• 1 x Test Cable