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Tests Incoming Power for Open Ground, Reverse Polarity, High and Low Voltage
TRC AECM20020 Elektra Check Digital RMS Voltage and Frequency Meter
TRC AECM20020 Digital RMS Voltage and Frequency Meter
TRC AECM20020 Elektra Check Digital RMS Voltage and Frequency Meter
Item# 55967
Price: Normally $75.99 
Hot Deal $65.16
Free shipping on orders over $175 - See Details


  • RMS Voltage and Frequency Meter
  • Multi-tone Fault Alarm and Hands-free Auto Reset
  • One Button Operation
  • Wiring Diagnostics
  • LCD Display with LED Backlight

Essential Info

The TRC AECM20020 Elektra Check Digital RMS Voltage and Frequency Meter is a compact, easy to use instrument is made with advanced microelectronics and provides accurate testing and monitoring of electrical outlets and systems. Constantly monitors voltage and frequency indicating potential improper polarity and ground wiring. Its small size and rugged construction allows for convenient installation in an electrical outlet or use as a portable service tool.

Voltage is measured as RMS which is much more precise than AC average. RMS metering is the only method that can accurately measure all AC power sources. The RMS voltage and frequency readings are ideal for monitoring modified sine waves such as solid-state generators, inverters and Uninterruptible Power Supply (UPS) products. The Digital Monitor display will alternate between line voltage in RMS volts and line frequency in Hertz. The LCD display shows an 'F' in front of the reading to denote frequency.

Three display modes are available:
  • Alternating Voltage & Frequency( VOLT/FREQ.)
  • Voltage only (VOLTAGE)
  • Frequency only (FREQUENCY)

  • Pressing the MODE button on the front of the Digital Monitor will cycle through the display modes. Both voltage and frequency are constantly monitored regardless of the display mode.

    This meter is ideal for use in monitoring electrical circuits within a motor home or RV. Modern RV's are full of HDTVs, DVRs, microwaves, air conditioners, etc. Once plugged in, you can track how power sources move up and down throughout the day, and receive an alert when it would be best to unplug your devices to ensure that your appliances are not ruined because you plugged into an unstable power source.

    What's Included

  • 1x - TRC AECM20020 Elektra Check Digital RMS Voltage and Frequency Meter
  • Specifications

    ManufacturerTRC (Technology Research Corporation)
    Manufacturer Product No.AECM20020
    Voltage Range85 to 150V AC RMS
    Frequency Range40 / 80 Hz03
    Operating Current0.02 Amp
    Under Voltage Alarm<102V AC RMS
    Over Voltage Alarm>135V AC RMS
    Under Frequency Alarm<55 Hz
    Over Frequency Alarm>65 Hz
    Outlet Type120V/15A single phase
    Operating temperature32° F to +125° F


    4 Ratings
    5 star: 75%  (3)
    4 star: 0%  (0)
    3 star: 0%  (0)
    2 star: 0%  (0)
    1 star: 25%  (1)
    Average Customer Rating
    (4 customer ratings)
    Share your thoughts with other customers
    jOHN Porter -- maine, U.S.A.   6/5/2014
    There is no measurement accuracy specified. An instrument like this is useless unless it has a decent accuracy specification. If it had 1% or better accuracy spec I would think it could be a 5 star. I will not buy any measuring instrument without knowing the accuracy.
    JAMES -- petersburg, IN   4/4/2014
    This product works as per factory specifications.
    DENNIS -- orchard park, NY   2/27/2014
    I have been searching for a meter like this for years. It is extremely useful in keeping tabs on the local utility. Besides, we have a back up generator and this is used to verify the power properties. Also, anyone using a portable generator, this would be very useful as well.
    REX -- burkburnett, TX   12/5/2013
    A simple but highly usefully product. It helped me ensure by RV generator voltage was adjusted correctly and allows me to monitor voltage while my RV is hooked to shore power at RV parks. It also indicated a faulty electrical plug in my house.

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