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Extech 380942
30A True RMS Clamp + Digital MultiMeter

  • 30A True RMS AC/DC Mini Clamp
  • Highest resolution and accuracy at low currents
  • Low AC/DC Current measurements with high resolution to 0.1mA AC and 1mA DC
  • Voltage measurements using test leads
  • Ideal for low current measurements
  • High Accuracy and Resolution
  • Large 4000 count LCD display with full function indication
  • Fast 40 segment analog bargraph
  • One touch "Auto Zero" for DCA measurements eliminates the need to turn a knob to zero adjust
  • 0.9" (23mm) clamp jaw opening
  • Overload protection to 400A DC
  • Data hold
  • Auto power off
  • Min/Max
  • True RMS models recommended for measurements where distortion may otherwise cause inaccuracies
  • Optional 3-prong AC Line Separator enables safe and easy measurements on power cables with molded plugs (splits hot conductor from neutral and ground)

Extech's Mini Clamp Meters, with their high resolution, are the ideal tools for accurately measuring very low AC & DC currents. Smaller in size than traditional clamp meters, they easily fit into tight spaces.

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Extech 380942 Shown

Product Information
Datasheet 319 KB
Manual 236 KB
Ordering Info Jump to Product Models, Prices, Accessories, and Ordering Information
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Selection Guide 380941 380942 380947
Type 200A Clamp DMM 30A Clamp Meter 400A Clamp DMM
AC Current 200A 0-30A  
Resolution 100mA 10mA  
Accuracy ±(1.0% +2d) ±(2.0%+5d)@50/60Hz  
DC Current 40A 0-30A  
Resolution 10mA 10mA  
Accuracy ±(1.0% +2d)    
AC Voltage 400V 0-400V  
Resolution 0.1V 0.1V  
Accuracy ±(1.5% +4d) (50/60Hz) ±(2.0%+5d)  
DC Voltage 400V 0-400V  
Resolution 0.1V 0.1V  
Accuracy ±(1.0% +2d) ±(1.0%+2d)
DCA     40A/400A
Resolution 10mA/100mA
Accuracy 1.0% ±2d
ACA (True RMS)     4A / 40A /
100A / 400A
Resolution 1mA / 10mA /
100mA / 100mA
Accuracy 1.5% ±3d
Resistance 400Ω    
Resolution 0.1 Ohm
Accuracy ±(1.5% +2d)
Frequency 10kHz   10kHz
Resolution 0.01Hz 0.01-100Hz
Accuracy ±(0.5% +2d) ±0.5% ±2d
Dimensions 7x1.75x1.25"
Weight 6 oz (170g) 6.2 oz (190g)
More Information more >   more >
Ordering Information
Model Description Buy Online Price
380942Extech 380942 Clamp Meter + DMM Mini 30A AC/DC True RMS Buy Now$389.99
380942-NISTExtech 380942-NIST Clamp Meter/DMM Buy Now$464.99
Additional Models Available
380941 Extech 380941 Clamp Meter + DMM Mini 200A AC/DC Buy Now$269.99
380947 Extech 380947 Clamp Meter 400A AC/DC TRMS Freq Buy Now$299.99
Included Accessories
  • Case
  • Test leads
  • Wrist strap
  • 2 AA batteries
Optional Accessories
480172Extech 480172 Line Separator 3 Prong Buy NowSale $13.91
(Reg. $15.99)

*NOTE: Items ordered with optional NIST calibration will require
approximately 10 days to complete the certification.