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.
| SELECTION GUIDE | 
 | NEW | 
 | NEW | NEW | NEW | 
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| 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 | √ | 
 | √ | √ | √ | 
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| Analog Bar | √ | 
 | √ | √ | √ | 
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| True RMS | √ | 
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 | √ | 
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| Display Backlight | 
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 | √ | √ | √ | 
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| Fused 10A Range | √ | √ | √ | √ | √ | 
 | √ | 
| Auto Power off | 
 | √ | √ | √ | √ | √ | 
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| 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 | 
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| Resistance | 220MΩ | 20MΩ | 40MΩ | 60MΩ | 40MΩ | 20MΩ | 20MΩ | 
| Capacitance | 220mF | 20µF | 4000µF | 4000µF | 4000µF | 200µF | 
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| Frequency | 220MHz | 20kHz | 10MHz | 10MHz | 10MHz | 
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| Diode | √ | √ | √ | √ | √ | √ | √ | 
| Continuity | √ | √ | √ | √ | √ | √ | √ | 
| Temperature | 
 | 
 | √ | 
 | 
 | √ | √ | 
| Duty Cycle(%) | √ | 
 | √ | √ | √ | 
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| Transistor (hFE) | 
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 | 
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 | √ | 
 | √ | 
| EF Function | 
 | 
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 | √ | 
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| REL | √ | 
 | √ | √ | √ | 
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| Data Hold | √ | √ | √ | √ | √ | √ | √ | 
| Peak Hold | √ | 
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| MAX MIN | 
 | 
 | √ | √ | √ | 
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| RS232C | √ | 
 | √ | √ | 
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Included Accessories
User manual x1, Test leads, Battery
Optional Accessories
GDM-TL1   Test Lead Set for All DMM
GSC-014   Soft Carrying Case for DMM Accessory