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Every owner of an RV and off-grid power system should have a good AC/DC Digital Multimeter. Professional grade DMMs (digital multimeters) can cost hundreds of dollars, but I finally found a low cost DMM that I am happy with.   This DMM has a clamp on ammeter which has the rare ability to actually measure DC current.  This is very useful for troubleshooting solar and other power systems.


  • Module Type: EZ-DMM

    Display Count: 2000
    Auto Range: Yes
    Jaw Capacity: 17mm
    True RMS: Yes
    Diode: Around 3.0V
    V.F.C.: Yes
    NCV: Yes
    Data Hold: Yes
    Zero Mode: Yes
    LCD Backlight: Yes
    Auto Power Of: Around 15 Minutes
    Continuity Buzzer: Yes
    Low Battery Indication: 2.5V
    Input Protection: Yes
    Input Impedance for DCV: 10M

    AC Current (A) 2A/20A/100A (±2.5%+5)
    DC Current (A) 2A/20A/100A (±2%+3)
    AC Voltage (V) 2V/20V200V/600V (1.0%+3)
    DC Voltage (V) 200mV/2V/20V200V/600V (±0.7%+3)
    Resistance (Ω) 200Ω/2KΩ/20KΩ/200KΩ/2MΩ/20MΩ (±1.0%+2)
    Capacitance (F) 2nF/20nF/200nF/2μF/20μF/200μF/2mF/20mF(±4%+5)

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