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Multimeters
(Multi Meter, Digital Multimeter, Digital Volt Meter, DMM, DVM)

Multimeters or Digital Multimeters are electronic measurement instruments that combine multiple measurement functions that include but are not limited to voltage, current and resistance. Some Multimeter models will also include frequency and temperature measurement, along with capacitance and diode testing. Multimeters may also be known as Digital Multimeters, Multi Meters, DMM, DVM. Several Multimeter models are available with Data Logging functions built in. RDI is proud to offer Professional True RMS Multimeters from both TPI and Extech Instruments.

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Extech EX570 12 Function True RMS Industrial MultiMeter with IR Thermometer Extech EX570 12 Function True RMS Industrial MultiMeter with IR Thermometer

True RMS, autoranging DMM with large digit LCD display and Type-K/IR temperature function

Our Price: $249.99
Extech EX540 12 Function True RMS Industrial MultiMeter/Datalogger Extech EX540 12 Function True RMS Industrial MultiMeter/Datalogger

MultiMeter/Datalogger (up to 9,999 readings) with Wireless PC interface (915MHz)

Our Price: $340.99
Sale Price: $325.00
You save $15.99!
Extech EX540 12 Function True RMS Industrial MultiMeter/Datalogger Extech EX542 12 Function True RMS Industrial MultiMeter/Datalogger

MultiMeter/Datalogger (up to 9,999 readings) with Wireless PC interface (433MHz)

Our Price: $299.99
Extech EX500 Series MultiMeter Extech EX500 Series Heavy Duty Industrial MultiMeters

Waterproof Rugged Design with CAT IV-600V safety rating for industrial applications

EX470 True RMS Autoranging Multimeter with IR Thermometer Extech EX470 True RMS Autoranging Multimeter with IR Thermometer

Combination Autoranging multimeter with IR Thermometer

Our Price: $149.99
EX450 Autoranging Multimeter with IR Thermometer Extech EX450 Autoranging Multimeter with IR Thermometer

Combination Autoranging multimeter with IR Thermometer

Our Price: $119.99
EXT-MM560A MultiMaster Extech MM560A - MultiMaster High-Accuracy Multimeter

True RMS Multimeter with 50,000/500,000 count LCD
  • Full range multimeter functions with 0.03% basic DCV accuracy and up to 20kHz True RMS ACV bandwidth
  • 50,000 count (500,000 for DCV and Hz) backlit LCD display with bar graph

Our Price: $259.99
EX430 True RMS Autoranging Multimeter Extech EX430 True RMS Autoranging Multimeter

Economical True RMS Multimeter With 11 Functions

  • True RMS AC measurements
  • Relative function
  • Type K thermometer, Capacitance, Frequency, and Duty Cycle
  • Low current capability - measure down to 0.1uA
  • Audible and visual input alerts
  • Easy to read 1 inch digits on backlit display
  • Max Hold for AC/DC Voltage and Current measurements and Relative function for establishing a base line for reference
  • Complete with CAT III test leads, multi-position tilt stand and velcro strip for hanging, protective holster with test lead holder, bead wire temperature probe (-58 to 482 Deg. F/-50 to 250 Deg. C) and 9V battery

Our Price: $94.99
TPI 440 True RMS Digital Multimeter with Oscilloscope Functions, 1MHz TPI 440 True RMS Digital Multimeter with Oscilloscope Functions, 1MHz

TPI 440 True RMS Digital Multimeter with Oscilloscope Functions, 1MHz

Our Price: $399.95
Sale Price: $359.96
You save $39.99!