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V5.0    5/04 

2

Introduction 

Congratulations on your purchase of the Extech 470 (part number 
EX470) True RMS Autoranging Multimeter plus IR Thermometer. 
This meter measures AC/DC Voltage, AC/DC Current, Resistance, 
Capacitance, Frequency, Duty Cycle, Diode Test, and Continuity 
plus Thermocouple and Non-Contact IR Temperature. Proper use 
and care of this meter will provide many years of reliable service. 

Safety

This symbol adjacent to another symbol, 

terminal or operating device indicates that the 

operator must refer to an explanation in the 

Operating Instructions to avoid personal injury 

or damage to the meter. 
This 

WARNING

 symbol indicates a potentially 

hazardous situation, which if not avoided, 

could result in death or serious injury. 
This 

CAUTION

 symbol indicates a potentially 

hazardous situation, which if not avoided, may 

result damage to the product. 
This symbol advises the user that the 

terminal(s) so marked must not be connected 

to a circuit point at which the voltage with 

respect to earth ground exceeds (in this case) 

600 VAC or VDC. 
This symbol adjacent to one or more terminals 

identifies them as being associated with 

ranges that may, in normal use, be subjected 

to particularly hazardous voltages. For 

maximum safety, the meter and its test leads 

should not be handled when these terminals 

are energized. 
This symbol indicates that a device is 

protected throughout by double insulation or 

reinforced insulation. 
This symbol indicates there is a potential 

hazard from a laser light source. 

WARNING 

CAUTION 

MAX 
600V

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