The FLIR DM166-NIST 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-NIST 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.