Imaging TRMS Multimeter


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The FLIR DM166 is the most affordable multimeter with built-in thermal imaging — a must-have tool for commercial electricians, automation, electronics, and HVAC technicians. Featuring Infrared Guided Measurement (IGM™) powered by an 80 x 60 FLIR thermal imager, the DM166 visually guides you to the precise location of temperature anomalies and potential problems faster, more safely, and efficiently. The feature-packed multimeter is an ideal tool for troubleshooting and diagnosing complex issues in both high- and low-voltage applications.

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The most affordable DMM with built-in thermal imaging

  • Troubleshoot Faster

    Quickly scan for overheating components with IGM, and diagnose faults with broad DMM test functions

  • Work Safer

    Identify energized and potentially faulty equipment from a safe distance using non-contact temperature measurement

  • Diagnose Problems More Efficiently

    Provides a rich feature set for both high-voltage and low-voltage applications: Variable Frequency Drive, resistance, frequency, capacitance, and more.

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10 yrs on product and detector
Drop test
3 m
IP Rating
Imaging & Optical
IR Resolution
60 × 80 pixels (4,800 pixels)
Thermal image palettes
Rainbow, iron, gray scale
Measurement & Analysis
AC/DC Amps
Range: 10.00 A Basic Accuracy: ±1.0% / ±0.7%
AC/DC mAmps
Range: 600.0 mA Basic Accuracy: ±1.0% / ±0.7%
AC/DC microAmps
Range: 4000 µA Basic Accuracy: ±1.5%
AC/DC mVolt
Range: 600.0 mV Basic Accuracy: ±1% / ±0.5%
AC/DC Voltage
Range: 600.0 V Basic Accuracy: ±0.7% / ±0.5%
Range: Basic Accuracy: 200.0 nF ±1.5% 200.0 µF ±1.5% 2.000 mF ±2.0% 10.00 mF ±5.0%
Continuity check
Between 30 Ω and 480 Ω
Diode Test
Range: 3.000 V Basic Accuracy: ±0.9%
Frequency Range
Range: 99.99 kHz Basic Accuracy: ±1.0%
Range: Basic Accuracy: 600.0 Ω ±0.3% 600.0 kΩ ±0.5% 6.000 MΩ ±0.9% 60.00 MΩ ±1.5%
Temperature Range
–10 to 150°C (14 to 302°F)
–40 to 752.0°F DMM ± (1.0% + 3°F), –40 to 400°C DMM ± (1.0% + 1.5°C)
True RMS
VFD AC Voltage
Range: 600.0 V RMS Basic Accuracy: ±1.0%
Meter Data
Auto Power Off
3 AA batteries; optional TA04 Li-Poly rechargeable battery
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Export Restrictions

Export Restrictions

The information contained in this page pertains to a dual use product controlled for export by the Export Administration Regulations (EAR). Diversion contrary to US law is prohibited. US Department of Commerce authorization is not required prior to export or transfer to foreign persons or parties unless otherwise prohibited.