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CM1-VA 4 Digits Voltage/Current Meter
CM1-VA 4 Digits Voltage/Current Meter


CM1 series Indicator has been designed in simple function and 4 digital 20.0mm LED displays with economic cost.

They can be programmed by tact switches that are hidden in backside of front bezel.

They are also available option of 2 Relay outputs, 1 Analog output or 1 RS485 (Modbus RTU Mode) interface with versatile functions such as control, alarm, re-transmission or communication for a wide range of industrial applications.



■ Measuring AC / DC Voltage 50mV~600VAC / DC Current 1.999mA~10A

■ The operation buttons are built-in to prevent users from arbitrary operation or incorrect setting, which may cause abnormal operation of the equipment

■ The display value can be adjusted slightly with the "field measurement signal"

■ The output can option relays or analog output or RS485 (Modbus RTU mode)

■ Relay function in addition to start delay, active delay, delay off and active hold

■ Analog output voltage signal range can be switched (0~10V/0~5V/1 ~5V) or current signal range can be switched (0~10mA/0~20mA/4~20mA)

■ The analog output signal is free to set the corresponding display range (Span-50%) and can be fine-tuned on-sit

■ On board terminal design, no quality issue; installation depth is only 73mm



■ Testing Equipment for Volt/Current Measuring

■ MCC panel, Machinery, Switch gear... for Voltage or Current Measuring

Summary of specifications
  • Summary of Specifications
  • Selection Information
  • Related Products

■Technical Specification




  • Calibration: Digital calibration
  • A/D converter: 14 bits
  • Accuracy:
    • DC: ≤± 0.1% of FS ± 1C
    • AC: ≤± 0.2% of FS ± 1C
  • Sampling rate: 15 cycles/sec
  • Response time: ≤ 100 mS (when avg = “1”)

Display & Function:

  • LED: 4 digits, 0.8”(20.0mm) red high-brightness LED
  • Display range: -1999~+9999
  • Scaling function:
    • lOsc: Low Scale; Settable range: -1999~+9999
    • hIsc: High Scale; Settable range: -1999~+9999
  • Decimal point: Programmable from 0 / 0.0 / 0.00 / 0.000
  • Over range Indication: ovfl, when input is over 110% of input range Hi
  • Under range indication: -ovfl, when input is under losc value
  • Max / Mini recording: Maximum and Minimum value storage during power on.
  • Low cut: lOcut: Settable range: -1999~9999 counts




Version 1.2 / Update: 2020.12.24



Version 1.5 / Update: 2022.04.13



Version: 1.2 / Update: 2022.04.13

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