FLIR One Pro Thermal Imaging Camera for Android Smartphones

Published on Aug. 2, 2023, 7:01 p.m.

Introduction to Thermal Imaging Technology

Thermal imaging technology allows us to see and measure heat. Every object emits infrared radiation, and thermal cameras can detect this radiation, converting it into an image we can see. This technology is vital for a variety of applications, from detecting heat loss in buildings to identifying hot spots in electrical systems. The FLIR One Pro is a prime example of this technology applied in a compact and user-friendly device, enabling professionals and hobbyists alike to access advanced thermal imaging capabilities.

The FLIR One Pro is a compact thermal imaging camera that attaches to Android smartphones via micro USB connection. It allows users to see and measure infrared radiation, letting you detect temperature differences and potential issues in buildings, electronics, and machinery.


  • Manufacturer: FLIR Systems
  • Release Date: May 2017
  • Key Features: 160 x 120 thermal sensor, MSX image enhancement, -20°C to 400°C temperature range, plug-and-play connectivity with Android phones

Understanding Thermal Imaging

Thermal imagers, like the FLIR One Pro, detect infrared radiation and convert it into an image. The technology behind this is fascinating – it involves capturing different levels of infrared light, which is invisible to the naked eye, and translating them into a gradient of colors that represent temperature variations. Thermal imaging is used in various sectors, including medical, construction, and electrical engineering, to name a few. It’s the interplay of resolution, sensitivity, and temperature range that determines the effectiveness of a thermal imager.


The FLIR One Pro has a slim, rectangular design that’s meant to attach seamlessly to your smartphone. It measures just 2.7 x 1.4 x 0.6 inches and weighs only 1.28 ounces. The housing is made of plastic but feels sturdy and durable. There are no protruding buttons - just one end cap that hides the micro USB connector.

Overall, the minimalist design makes the FLIR One Pro easy to grip and won’t add too much bulk or weight to your phone. It comes with a protective casing that has cutouts for the camera lens and ports.


FLIR One Pro performed reliably and detected temperature variances accurately. I was able to easily locate insulation gaps, water damage, and electrical hot spots in buildings. The high resolution thermal sensor made it easier to pinpoint small issues.

Image Quality

The FLIR One Pro captures thermal images at 160 x 120 pixel resolution, 4x higher than the standard FLIR One. This enhanced resolution reveals more detail and makes it easier to pinpoint temperature variations.

It also uses FLIR’s MSX technology that embosses visual details from the visible light camera onto the infrared image. This makes thermal images more recognizable and easier to interpret. The advanced image processing provides excellent thermal accuracy.

In-depth Analysis of Technical Specifications

  • Resolution: The FLIR One Pro’s 160 x 120 thermal sensor resolution sets it apart, offering clarity that’s essential for identifying and diagnosing issues.
  • Sensitivity: Sensitivity is crucial for detecting minor temperature differences. The FLIR One Pro excels in this, providing detailed thermal gradients.
  • Temperature Range: The -20°C to 400°C range of the FLIR One Pro accommodates a wide array of applications, from industrial maintenance to home inspection.
  • Image Enhancement Technology: FLIR’s MSX and VividIR technologies enrich thermal images, making them more detailed and easier to interpret.
  • User-Friendliness: The device’s design and the intuitive FLIR One app contribute to a seamless user experience, crucial for efficient troubleshooting.
  • Connectivity: While the FLIR One Pro is designed for direct connection to smartphones, exploring its potential for integration with other digital tools could expand its versatility.

Features and Usage

The FLIR One Pro offers a temperature range of -20°C to 400°C, suitable for most building inspection, electronics, and mechanical applications.

Using the FLIR One is very simple. You just connect it to your Android phone via micro USB (OTG adapter required for USB-C ports), launch the FLIR One app, and start scanning! The app provides various measurement tools and image adjustments.

One downside is the short battery life. You only get about 1 hour of continuous use per charge. The charging cable is also awkwardly short.

Market Insights and Trends

Exploring the thermal camera market, the FLIR One Pro stands out for its balance between advanced features and affordability. The market for thermal imagers is growing, driven by innovation and expanding applications. Understanding market dynamics and consumer needs can provide valuable insights into future trends and the continuous evolution of thermal imaging devices.

Use Cases

  • Finding insulation gaps, air leaks in buildings
  • Inspecting electrical panels, circuits for hot spots
  • Locating water damage and mold
  • Checking machinery and equipment for overheating
  • Electronics troubleshooting

User Feedback

The FLIR One Pro thermal imaging camera has garnered a diverse range of feedback from users, reflecting its impact across various applications. A thorough analysis of user reviews highlights key areas where the FLIR One Pro excels and where it could see improvement.

Positive Feedback:
- Image Quality: Users consistently praise the FLIR One Pro for its exceptional image quality. The 160 x 120 thermal sensor, coupled with FLIR’s MSX and VividIR technologies, delivers detailed and clear images, allowing users to easily identify issues and anomalies.
- Versatility: The wide temperature range and sensitivity of the FLIR One Pro make it a versatile tool suitable for a myriad of applications, from home inspections to industrial maintenance.
- Ease of Use: Many users appreciate the plug-and-play nature of the device, emphasizing its ease of integration with Android smartphones. The intuitive FLIR One app further enhances the user experience, making thermal imaging accessible to professionals and hobbyists alike.

Areas for Improvement:
- Battery Life: The most common critique is the FLIR One Pro’s battery life. Users express a desire for longer operational times to avoid frequent recharges during extended use sessions.
- Compatibility Issues: Some users have encountered compatibility issues with specific Android models. This feedback underscores the importance of continuous updates and compatibility checks to ensure a broad user base can leverage the device’s capabilities.
- User Manual Clarity: A few users have suggested that the accompanying documentation could be more detailed, offering clearer instructions and more comprehensive usage tips to maximize the device’s potential.

In summary, the FLIR One Pro is highly regarded for its superior image quality, adaptability, and user-friendly design. However, there is an opportunity for FLIR Systems to enhance the user experience further by addressing the battery life and ensuring wider compatibility with Android devices. By focusing on these areas, FLIR can solidify the One Pro’s position as a go-to tool for thermal imaging needs.


  • Compact and easy to use
  • High resolution thermal images
  • Integrates thermal and visible light images
  • Reasonably priced for performance


  • Battery only lasts about 1 hour per charge
  • Some compatibility issues with phones


The FLIR One Pro delivers excellent thermal imaging performance in a compact and smartphone-friendly package. The high resolution sensor, MSX technology, and accurate temperature readings make it a very capable tool for building inspection, electronics troubleshooting, and other applications. Just be prepared to recharge frequently. Overall, it’s a great value for the performance.

Market Insights and Trends

Exploring the thermal camera market, the FLIR One Pro stands out for its balance between advanced features and affordability. The market for thermal imagers is growing, driven by innovation and expanding applications. Understanding market dynamics and consumer needs can provide valuable insights into future trends and the continuous evolution of thermal imaging devices.


  • Thermal sensor resolution: 160 x 120 pixels
  • Temperature range: -20°C to 400°C
  • Frame rate: 8.7 FPS
  • Field of view: 50° × 38°
  • Focal length: 6.8 mm
  • Dimensions: 2.7 x 1.4 x 0.6 in
  • Weight: 1.28 oz

Box Includes

  • FLIR One Pro thermal camera
  • Protective case
  • Micro USB charging cable
  • Printed documentation