New Type Hot Sale True RMS Digital Multimeter

• Customization: Available
• After-sales Service: 1 Year
• Warranty: 1 Year
• Model NO.: UT139B
• Power Supply: AA1.5*2
• LCD Size: 58 × 36 mm
• Body Size: 175 × 80 × 48.5 mm
• Body Weight: 370g
• Body Color: Red + Gray
• Standard Accessories: Batteries, Test Leads
• Transport Package: Carton
• Specification: 175 × 80 × 48.5 mm
• Trademark: Resound
• Origin: China

Product Description

Product Description

Basic functions	Measuring range	Basic accuracy
model		UT139B
DC voltage(V)	40mV/400mV/4V/40V/400V/600V	±(0.5%+2)
AC voltage(V)	40mV/400mV/4V/40V/400V/600V	±(0.8%+3)
DC current(A)	400μA/4000μA/40mA/400mA/4A/10A	± (0.8%+2)
AC current (A)	400μA/4000μA/40mA/400mA/4A/10A	±(1.0%+3)
Resistance(Ω)	400Ω/4KΩ/40KΩ/400KΩ/4MΩ/40MΩ	±(0.8%+2)
Capacitance(F)	9.999nF/99.99nF/999.9nF/9.999μ F/99.99μF/999.9μF/9.999mF/99.99mF	±(4.0%+5)
Frequency(Hz)	9.999Hz~9.999MHz	±(0.1%+4)
special features
maximum display		3999
Auto range		√
Manual range		√
true valid value		√
Frequency response (Hz)		45Hz~1kHz
AC variable frequency VFD measurement		√
duty cycle	0.1%~99.9%	√
Diode testing		About 3V
NCV		√
Automatic shutdown	about 15 minutes	√
On/off buzzer		√
low voltage display	≤2.4V	√
digital hold		√
Relative measurement		√
Max/Min		√
LCD backlight		√
Input protection	600Vrms	√
Input impedance	Maximum 1GΩ	√

Resound Photoelectric Technology Research Institute (LSRPTR)

Resound Photoelectric Technology Research Institute (LSRPTR), also known as Resound Research Institute, is affiliated with China Haiheng International Trade Group Co., Ltd. (CHHGC). As an investment attraction enterprise in Zhongyuan Science and Technology City and a construction unit of the Zhongyuan Aurora Laboratory, the institute is committed to the industrialization of scientific and technological achievements, guided by market demand.
 

Technical Cooperation

Resound Research Institute has established technical cooperation with numerous well-known domestic and foreign universities, research institutes, and enterprise platforms, including:

 

Tsinghua University
Lanzhou University
Zhengzhou University
Altai State Technical University of Russia
Northwestern Polytechnical University
Chinese Academy of Engineering
Henan Academy of Sciences
China Electronics Technology Group
CGN Group
Xiamen University
Henan University
National University
University of Electronic Science and Technology of China
Chinese Academy of Sciences
China Academy of Engineering Physics
China Shipbuilding Group
China Electronics Group
Henan Inspection Group

 

Research and Development Fields

* Applications of Micro-Electromechanical and Lithography Technology
* Optoelectronics and Spectroscopy Technology
* High-Power Laser and Device Preparation Technology
* Nuclear Instrument and Emergency Equipment System Applications
 

Introducing Advanced Technologies and Products

Resound Research Institute continuously introduces advanced new technologies and products in industrial application scenarios such as market supervision, public safety, environmental monitoring, and science, education, research, and production. This has led to the formation of a domestically produced high-end scientific equipment industry base that integrates design, research and
development, production, sales, and services. This base drives the iteration of downstream industry technology, enhances the transformation and industrialization level of scientific and technological achievements, and provides technological sources for innovative development.