In-Depth : InfiRay P2 Pro Thermal Camera

Published on Aug. 2, 2023, 4:58 p.m.

Thermal imaging cameras have become indispensable tools for a wide range of applications, from building inspections to electronics troubleshooting. The InfiRay P2 Pro stands out as an ultra-portable and highly capable option, packing an impressive array of features into a remarkably small and lightweight body. In this review, we’ll take an in-depth look at the design, image quality, functionality, and performance of the P2 Pro thermal camera.

 InfiRay P2 Pro Thermal Camera


  • Brand: InfiRay
  • Model: P2 Pro
  • Type: Handheld thermal imaging camera
  • Key Features:
  • 9g lightweight metal body, just 9mm thick
  • 256x192 sensor resolution
  • -4°F to 1112°F temperature range
  • Magnetic macro lens for small object imaging
  • Professional analysis software
  • 25 FPS frame rate

Weighing just 9 grams, the P2 Pro is claimed to be the world’s smallest thermal imager. It achieves this diminutive size by omitting a built-in display or storage, instead streaming real-time thermal video to a connected smartphone. Image quality is excellent with a 256x192 InfiRay sensor providing crisp, detailed thermographs.

The temperature measurement range spans an impressive -4°F to 1112°F (-20°C to 600°C) with accuracy within ±2°C. Thermal sensitivity is high at <40 mK, enabling tiny temperature differences to be visualized. An onboard ASIC chip provides real-time image processing for temperature measurements and alarms.

Design and Build Quality

Encased in a durable metal housing, the P2 Pro exhibits excellent build quality despite its small size. It connects to Android or iOS devices via a USB-C cable and draws minimal power, extending phone battery life compared to models with onboard batteries.

An included 50cm extension cable allows flexible positioning during use. The macro lens version features a magnetic accessory lens for ultra-close-up imaging.

 InfiRay P2 Pro Thermal Camera

Image Quality and Features

With its 25Hz frame rate, the P2 Pro provides smooth, judder-free thermal video. Image quality is excellent for its class with high thermal sensitivity revealing minute temperature variances. The native 19mm field of view strikes a good balance between overview and detail.

Users can choose from 11 color palettes to visualize the thermal data. Alternating between palettes can help highlight temperature patterns. Onboard tools allow custom temperature spans to be set to emphasize targets. Emissivity, distance, and environment settings can be configured for accurate readings.

 InfiRay P2 Pro Thermal Camera

Software and Analysis Tools

The P2 Pro offers professional-grade analysis features to go along with the excellent hardware. You can overlay precise temperature measurements on areas, lines, or spots. Essential adjustments like emissivity, object distance, and ambient temperature can be tweaked to improve accuracy. For more casual use, color palettes and temperature scale locking allow you to customize the appearance of your thermal images.

Applications and Ease of Use

Despite its advanced capabilities, the P2 Pro is simple and intuitive to operate via the companion app. Key metrics like min/max temperature are clearly displayed. Tools like isotherm allow threshold-based highlighting of temperatures.

Common applications include building/HVAC inspections, locating heat leaks, circuit troubleshooting, and electronics repair. The macro lens enables inspecting PCB components up close. Outdoor uses like finding warm-blooded animals at night are also possible.

Use Cases

  • Building insulation & HVAC inspection
  • Finding heat leaks
  • Electrical inspection
  • Electronics repair
  • PCB debug and failure analysis
  • Wildlife observation

User Feedback

The P2 Pro thermal camera has received mostly positive feedback from users. It has a 4.2 out of 5 star average rating based on 34 reviews on Amazon.

Many reviewers praised the compact size and portability of the device. They liked being able to easily carry it in a pocket or pouch. Reviewers also noted the excellent image quality and temperature accuracy provided by the 256x192 sensor and advanced calibration capabilities.

Several users mentioned the device working well for finding insulation issues, detecting wildlife outdoors, inspecting electrical and HVAC systems, and troubleshooting circuit boards. The macro lens enabled clearly imaging small components and heat spots on circuitry.

Some drawbacks mentioned were occasional software glitches and crashes when using the app interface. This could likely be fixed with software updates. There were also some reports of slow shipping times directly from InfiRay, but delivery was faster when ordering through Amazon.

Overall, most users found the P2 Pro to be an excellent value portable thermal imaging camera due to its combination of small size, image quality, temperature range, and analysis features.

Pros and Cons

- Ultra portable
- High thermal sensitivity
- Magnetic macro lens for closeups

- App stability needs improvement
- No onboard storage


The P2 Pro sells for around $300USD, a very competitive price given its capabilities and performance. The macro lens version costs approximately $340USD.


The InfiRay P2 Pro punches well above its weight class, packing robust capabilities and thermal imaging performance into an impressively tiny package. It’s an extremely portable and flexible inspection tool for building, electrical, and electronics applications where accurate and detailed thermography is needed. Just be prepared for potential app stability issues. Overall, the P2 Pro delivers outstanding value and is easy to recommend for professional or DIY use.

 InfiRay P2 Pro Thermal Camera


  • Dimensions: 63 x 43 x 15.7 mm
  • Weight: 9g
  • Image Resolution: 256 x 192 pixels
  • Pixel Size: 17 μm
  • Spectral Range: 8 - 14 μm
  • Frame Rate: 9 Hz or 25 Hz
  • Temperature Range: -20°C to +300°C (-4°F to 572°F)
  • Temperature Accuracy: ±2°C or 2% of reading
  • Temperature Sensitivity: \<40 mK
  • Field of View: 57° x 44°
  • Focus: Fixed focus, minimum focus distance 10 cm
  • Image Modes: Thermal, visual, MIF fusion
  • Palettes: Rainbow, ironbow, sepia and other color modes
  • Image Storage: Save to phone gallery
  • Battery: Powered via phone’s USB-C port
  • Phone Compatibility: Android 8.0 and above
  • Certifications: CE, FCC, RoHS
  • Warranty: 2 years

What’s Included

The P2 Pro package contains the thermal imager, USB-C cable, manual, and carrying pouch. The macro lens version also includes the magnetic accessory macro lens.

How To Use

  • Download the P2 Pro app
  • Plug the camera into your smartphone’s USB-C port
  • Open the app to view the live thermal feed
  • Adjust temperature range, palettes, and other settings as needed
  • Touch area of interest to get temperature readout
  • Capture images and videos to analyze in more detail

Frequently Asked Questions

Q1: Can this camera detect small details and thermal variations?

Absolutely! The InfiRay P2 Pro Thermal Camera boasts a high infrared resolution of 256x192 pixels and a sensitivity of 40mk, allowing it to capture even subtle temperature differences. The included magnetic macro lens adds an extra layer of detail, enabling you to observe tiny components on circuit boards down to a distance of 4cm.

Q2: How wide is the temperature detection range?

Thanks to its wide temperature measurement range (-4℉ to 1112℉) and a high accuracy of ±2°C, the InfiRay P2 Pro Thermal Camera is incredibly versatile. It’s suitable for a multitude of tasks including detecting electrical faults, spotting mechanical issues, identifying energy inefficiencies in buildings, and much more.

Q3: Is it compatible with my Android phone?

The InfiRay P2 Pro Thermal Camera works seamlessly with Android devices (Android 9.0 and above) that have a USB-C port. You may need a short extension cable if you have a bulky phone case.

Q4: Does the software offer advanced features?

Yes! The InfiRay P2 Pro Thermal Camera includes a professional software suite for in-depth analysis. You can analyze previously captured thermal images, select point, line, and area analysis modes, customize parameters, and visualize data in a variety of ways.

Q5: How portable is this thermal camera?

The InfiRay P2 Pro Thermal Camera stands out with its incredibly compact size and weight (only 9g). It’s the world’s smallest thermal camera, making it ultra-portable and convenient for on-the-go use.


  • Explore the professional analysis software: Take full advantage of the software’s capabilities to get the most out of your captured thermal images.
  • Experiment with color palettes: Customize the color palettes in the camera to optimize visualization for different applications.
  • Utilize the DIY features: Use the built-in emissivity, distance, and ambient temperature adjustments to fine-tune measurements and achieve the highest possible accuracy.
  • Consider a carrying case: Although small, a case will protect the InfiRay P2 Pro Thermal Camera during transport.