FLIR ONE
Version:5.3.11
Published:January 22 , 2026 15:04:06 PM
Introduction
FLIR ONE: Professional Thermal Imaging for Your Smartphone
The FLIR ONE is a professional-grade thermal imaging camera that attaches to your smartphone, transforming it into a powerful diagnostic tool. This system is designed for technicians, inspectors, and DIY enthusiasts who need to visualize heat for tasks like electrical inspections, HVAC troubleshooting, and building diagnostics. The companion FLIR ONE app provides the interface to capture, analyze, and share thermal data. By revealing temperature differences invisible to the naked eye, the FLIR ONE enables users to identify problems quickly, accurately, and non-invasively.

Live Thermal Imaging and MSX Blending
To begin using the core function, users launch the FLIR ONE app and point their connected device at a target. The screen displays a real-time thermal image overlaid with a color palette that represents temperature variances. The FLIR ONE’s signature MSX (Multi-Spectral Dynamic Imaging) technology simultaneously captures visible light details, like edges and text, and superimposes them onto the thermal image. This blending creates a more recognizable and detailed picture, making it significantly easier to pinpoint exactly where a hot or cold spot is located in relation to the physical object.

Spot Temperature Measurement and Analysis
For precise analysis, users can tap anywhere on the live thermal display within the FLIR ONE app to place a movable spot meter. This tool provides an exact temperature reading for that specific pixel. Technicians use this to measure the surface temperature of electrical components, pipes, or insulation. By comparing readings from different points, they can identify abnormal temperatures that indicate overloads, blockages, or heat loss. This quantitative data is crucial for verifying conditions before they lead to failure.

Auto Hot/Cold Spot Tracking
On supported FLIR ONE models like the Edge and Pro series, this feature automatically identifies and marks the hottest and coldest areas in the scene with crosshairs. Users simply need to view the area of interest, and the FLIR ONE software continuously analyzes the image to track these extreme points. This eliminates the need to manually search for temperature anomalies, streamlining the inspection process. It is particularly useful for quickly scanning large areas, like circuit panels or building facades, to instantly locate the most critical points for further investigation.

Adjustable Thermal Palettes and Scale
The FLIR ONE app provides multiple color palettes—such as Ironbow, Rainbow, and Grayscale—to represent temperature data. Users access this by tapping the imaging options menu and selecting their preferred palette, which can help highlight specific details depending on the scenario. Furthermore, professionals can manually adjust the infrared scale to focus on a narrower temperature range. By sliding the high and low limits on the scale, they can enhance the color contrast within a specific band of temperatures, making subtle variations much more apparent and easier to diagnose.
Image Capture, Annotation, and Reporting
After identifying an issue, users capture the evidence by taking a thermal photo or video, which is saved to the device's gallery within the FLIR ONE app. To add context, the app allows for annotation; users can type text notes directly onto the image to document observations, such as a circuit breaker ID or a location. These annotated images and videos can then be shared via email or message directly from the app or uploaded to the FLIR Ignite cloud service for secure storage, organized reporting, and easy sharing with clients or team members.
Wireless Operation for Hard-to-Reach Areas
With the FLIR ONE Edge series, the camera head detaches from the phone dock for completely wireless operation. Users connect the camera to the app via Bluetooth, allowing them to position the compact thermal sensor into tight or hazardous spaces—like inside an electrical cabinet or above a ceiling—while safely viewing the live feed on their smartphone screen from a distance. This workflow enhances both safety and accessibility, ensuring the FLIR ONE can be used effectively in virtually any inspection environment.
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