Extech Instruments MiniAmp Series User Manual page 3

Introduction
Congratulations on your purchase of Extech model MA400,
MA420, MA440 or MA460+ clamp-on multimeter. Properly used,
this meter will provide many years of reliable service.
Clamp meter functions common to all meters:
Autoranging
AC Current Measurements
Data Hold
Auto Power Off
Maximum Hold captures 30ms peaks
1.1" (28mm) Jaw size
MultiMeter functions common to all models:
AC/DC Voltage to 600V
Resistance to 40MΩ
Capacitance and Frequency tests
Features unique to the MA440 and MA460+ models:
Twin 4000 count LCD displays
Simultaneous display of Current/Voltage, Current/Resistance, or
Current/Temperature (MA460+)
Features common to the MA400 and MA420 models:
Single 4000 count LCD display
Relative zero function
True rms (MA420) for current and voltage measurements
Safety
International Safety Symbols
!
Caution ! Refer to the explanation in this Manual
Warning ! Risk of electric shock
Earth (Ground)
Double Insulation or Reinforced insulation
Fuse
AC--Alternating Current
DC--Direct Current
MA Series V2.0 7/02
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