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Our ServicesOn October 15, 2025, at the Shenzhen Wanxin Exhibition 2025, Changzhou Tonghui Electronics Co., Ltd. officially established a strategic partnership with the National Third Generation Semiconductor Technology Innovation Center (Shenzhen) ..
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About UsChangzhou Tonghui Electronics Co., Ltd. was founded in 1994. It is a national high-tech enterprise and a national specialized and innovative small giant enterprise that integrates research and development, manufacturing, and marketing.
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专注微弱信号测量，覆盖小电流、小电压及宽量程电阻参数。
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4 1/2 Digit Multimeter
-
■ 51,000-count display
■ Large-screen dual-display VFD with high
brightness
■ True RMS AC voltage and current measurements,
bandwidth up to 100kHz
■ Measurement functions, including DCV/ACV, DCI/ACI, Ω,
frequency/period, diode,Continuity, dBm,dB, etc.
■ Parameters,such as AC+DC, AC+Hz, Readout+d B,
Readout+d B m ,displayed synchronously
■ Measurement speed up to 40ms
■ DCV accuracy up to 0.02%, resolution up to10μV
■ Measured value displayed in the form of percentage
■ Relative mode (REL) to eliminate residual reading
■ Calibration without opening the case
■ Limit function (HI/IN/LO) for fast sorting
■ Equipped RS232C communication interface
-
■ 21,000-count display
■ Large-screen dual-display VFD with high
brightness
■ True RMS AC voltage and current measurements,
bandwidth up to 100kHz
■ Measurement functions, including DCV/ACV, DCI/ACI, Ω,
frequency/period, diode,Continuity, dBm,dB, etc.
■ Parameters,such as AC+DC, AC+Hz, Readout+d B,
Readout+d B m ,displayed synchronously
■ Measurement speed up to 40ms
■ DCV accuracy up to 0.02%, resolution up to10μV
■ Measured value displayed in the form of percentage
■ Relative mode (REL) to eliminate residual reading
■ Calibration without opening the case
■ Limit function (HI/IN/LO) for fast sorting
■ Equipped RS232C communication interface
