GDM-400 & GDM-300

The GDM-300/400 Series Hand Held DMM are a compact, high precision, battery operated multimeter series designed to meet most of the daily needs for design engineers as well as service engineers. The GDM-300/400 series design is driven by mobile-oriented features, such as automatic power down to preserve battery life, a large backlight display for crisp viewing, a rotary selector switch and clear-cut push buttons to ease operation. The basic functions match the depth of bench-top multimeters: fuse-protected current input, true RMS for accurate AC measurements, Auto ranging, Duty cycle, and Relative mode. These compact, reliable, and economical devices are ideal for any engineer.

MODEL GDM-461 GDM-452 GDM-397 GDM-360 GDM-398 GDM-357 GDM-350B
Max. Display 22000 19999 4000 6000 4000 1999 1999
Auto Ranging
Analog Bar
True RMS
Display Backlight
Fused 10A Range
Auto Power off
DC Voltage 1000V 600V 1000V 1000V 1000V 600V 250V
AC Voltage 750V 600V 750V 750V 750V 600V 250V
DC Current 10A 10A 10A 10A 10A 10A 10A
AC Current 10A 10A 10A 10A 10A 10A
Resistance 220MΩ 20MΩ 40MΩ 60MΩ 40MΩ 20MΩ 20MΩ
Capacitance 220mF 20µF 4000µF 4000µF 4000µF 200µF
Frequency 220MHz 20kHz 10MHz 10MHz 10MHz
Duty Cycle(%)
Transistor (hFE)
EF Function
Data Hold
Peak Hold


  • GDM-452/357/350B
  • 4 1/2 Digits 19999 counts (GDM-452), 3 1/2 Digits 1999 counts (GDM-357/350B)
  • Manual Ranging, Continuity Beeper/Diode Test, Data Hold
  • hFE Test (GDM-350B)
  • Temperature Measurement (GDM-357/350B)
  • Capacitance (GDM-452/357)
  • Frequency Measurement (GDM-452)
  • *GDM-461/397/360/398*
  • 22000 Counts Auto/Manual Ranging (GDM-461)
  • 4000 Counts Auto/Manual Ranging (GDM-397/398)
  • 6000 Counts Auto/Manual Ranging (GDM-360)
  • Capacitance, Frequency Measurement
  • Continuity Beeper/Diode Test
  • High Energy Fuse for 10A Range
  • Data Hold/Relative Mode
  • True RMS (GDM-461/360)
  • RS232C (GDM-461/397/360)

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