3. Introduction 
Thank you for selecting the FLIR DM166 True RMS Digital MultiMeter with IGM
TM
 
(Infrared Guided Measurement) Thermal Imaging. The DM166 can measure voltage up 
to 600V AC/DC and includes a VFD function (low pass filter). The thermal imager 
measures surface temperature, offers adjustable emissivity, and features a laser pointer 
and cross hairs for precise targeting. This device is shipped fully tested and calibrated 
and, with proper use, will provide years of reliable service. 
3.1 Key Features 
  6000 count 2.4” digital TFT display, 320x240 pixels. 
  IGM
TM
 Infrared imager with selectable color palette, laser pointer, cross hairs targeting, and 
adjustable emissivity measures surface temperature 
  Thermal imager (80x60 pixels) offers a 30:1 distance-to-spot ratio and a 50
o
 x 38.6
o
 field-of-
view 
  DMM measures AC/DC Voltage (V, mV), AC/DC Current (A, mA, µA), Frequency, Resistance, 
Continuity, Diode, Capacitance, and Type-K Temperature  
  Built-in non-contact voltage detector (NCV) 
  Flex Clamp adaptor direct input 
  Automatic and Manual ranging 
  Input over-voltage warning (OL) 
  Input warning when test leads are incorrectly connected to meter 
  MIN-MAX-AVG memory 
  Relative offset mode 
  Variable-frequency drive ‘VFD’ feature (low-pass filter) 
  Data (Display) Hold 
  Intelligent Auto Power OFF (APO), customizable 
  Safety Category Rating: CAT IV-300V, CAT III-600V. 
  Equipped with batteries, test leads, pouch, and Quick Start booklet.