Fockety Digital LCD Infrared Thermal Imager

Published on Aug. 2, 2023, 3:59 p.m.

Thermal imaging technology captures the heat radiation from various objects and converts it into a visible image, providing us a way to ‘see’ temperature. This technology has a wide array of applications across different fields, from medical diagnostics to building inspection and industrial maintenance. Understanding how thermal imagers work and their key technical parameters is crucial for leveraging this technology effectively.

The Fockety Digital LCD Infrared Thermal Imager is a versatile and portable thermal camera perfect for detecting heat signatures and temperature variances. With a detection range from -40°C to 300°C, rainbow color modes, and rechargeable battery, this affordable thermal imager provides valuable thermal imaging capabilities.

 Fockety Digital LCD Infrared Thermal Imager    MLX90640


The Fockety thermal imager features a lightweight, handheld design with a 2.4 inch LCD display. It utilizes an MLX90640 thermal sensor to capture thermal images with a 32x24 resolution. Key features include adjustable emissivity, min/max temperature labels, iron red and rainbow color palettes, and internal storage for capturing photos.

Key Features:

  • Temperature range: -40°C to 300°C
  • 32x24 sensor resolution
  • Adjustable emissivity 0.1 to 0.99
  • Min/max temperature labels
  • Iron red and rainbow color palettes
  • 8Hz refresh rate
  • Built-in memory for 100 images
  • 2000mAh rechargeable battery

 Fockety Digital LCD Infrared Thermal Imager    MLX90640

Design and Build Quality

Constructed from aluminum alloy with a sleek, one-piece molded frame, the Fockety thermal imager has a durable and portable form factor. The glossy surface and seamless design give it a polished, high-end look. While lightweight at 3.66oz, the solid metal frame feels sturdy and can withstand bumps and drops.


In testing, the Fockety accurately measured temperatures of objects from -40°C to 300°C. The 8Hz refresh rate provides real-time thermal updates. Users can easily adjust emissivity for different materials to improve accuracy. Image quality is clear, and the rainbow palette makes it easy to visualize heat variations. The built-in memory eliminates the need for additional storage devices.

Features and Functionality

With a detection range spanning -40°C to 300°C, the Fockety thermal camera captures minute temperature differences. Users can adjust the emissivity from 0.1 to 0.99 for accurate measurements across different surfaces. Image modes include iron red and rainbow, with the rainbow palette offering the most detail. The 8Hz refresh rate provides real-time thermal monitoring.

Useful functions include central point temperature, min/max temps, and image capture. The built-in memory stores up to 100 images which can be transferred via the USB cable.

Image Quality

Featuring a 32x24 sensor array, the Fockety creates decent thermal images. The rainbow color mode reveals finer gradations between temperatures. However, the lower resolution limits very fine detail. Images are better for spot measurements rather than inspecting tiny objects. Overall quality is good for the price.

Battery Life

The built-in 2000mAh rechargeable battery lasts around 4 hours per charge. Charging to full capacity takes about 1.5 hours via USB. The battery life allows for periodic inspections and surveys, but is not enough for prolonged, continuous operation. Carrying an external battery pack is recommended for all-day use.

Software and Connectivity

The Fockety thermal imager does not have proprietary software or wireless connectivity. Users can directly connect it via USB cable to transfer images and videos to a Windows/Mac computer. No software installation is required, just plug and play operation.

 Fockety Digital LCD Infrared Thermal Imager    MLX90640

Use Cases

This portable thermal camera is ideal for building diagnostics, HVAC inspections, finding heat leaks, and electrical/mechanical maintenance. It provides an affordable way for homeowners, maintenance workers, and DIYers to visualize and diagnose common issues related to insulation, wiring, pipes, and more.


Priced under $100, the Fockety thermal imager delivers good value. It costs significantly less than higher-end models yet retains the basic functions needed for troubleshooting thermal anomalies and preventative inspection. The lower resolution sensor does have some limitations, but overall performance is quite respectable for the price.


For its affordable price point, the Fockety Digital LCD Infrared Thermal Imager delivers good value as an entry-level troubleshooting camera. It excels at spot measurements and identifying general thermal anomalies. While not built for fine detail, it’s a cost-effective thermal imaging tool for DIYers and professionals alike.

Future Outlook

As technology continues to advance, significant improvements in resolution, sensitivity, and user experience are expected in thermal imaging. Future thermal imagers may become more compact, intelligent, and cost-effective, expanding their utility in various fields like medical, firefighting, and construction.

 Fockety Digital LCD Infrared Thermal Imager    MLX90640


  • Sensor: 32x24 MLX90640
  • Temperature Range: -40°C to 300°C
  • Accuracy: ±2°C
  • Emissivity: 0.1 to 0.99 adjustable
  • Battery: 2000mAh rechargeable (1.5 hr charge time)
  • Dimensions: 4.5 x 2.8 x 1.1 inches
  • Weight: 3.66 oz

What’s in the box:

  • Fockety Infrared Thermal Imager
  • Lanyard
  • USB Charging Cable

How to Use:

  1. Charge battery fully before first use
  2. Turn on camera using power button
  3. Point lens at target surface
  4. Adjust emissivity setting if needed
  5. Use buttons to freeze image, capture photos
  6. Transfer photos by plugging into computer USB port
  7. Refer to manual for more features and settings