UNI-T UTi165A Thermal Imaging Camera

Published on Aug. 15, 2023, 3:44 p.m.

Thermal imaging technology is a vital non-destructive testing method that generates images by measuring the infrared radiation emitted by different objects, thereby reflecting the temperature distribution on their surfaces. This technology has been widely applied in various fields, including but not limited to construction engineering, electrical inspection, medical diagnosis, and military reconnaissance. As an essential tool of thermal imaging technology, thermal imagers can help users identify temperature anomalies quickly and accurately, discover potential faults, and improve work efficiency and safety. In this article, we will delve into the features, performance, and applications of the UNI-T UTi165A thermal imager, aiding readers in better understanding and utilizing this advanced detection technology.

The UNI-T UTi165A is a handheld thermal imaging camera that allows users to see and measure temperatures in real time. It can detect temperature differences as small as 0.15°C, making it useful for identifying heat sources and leaks in buildings, machinery, and electronics. In this review, we’ll take a close look at the features, performance, and usability of this thermal camera.

 UNI-T UTi165A Unit Thermal Imager


  • 120x90 pixel infrared resolution
  • -10°C to 400°C temperature range
  • 2.8” color TFT display
  • Li-ion rechargeable battery
  • SD card storage
  • Rugged IP65 waterproof and 2m drop-resistant housing

 UNI-T UTi165A Unit Thermal Imager

Key Features

  • Accurate temperature measurements: The UTi165A can measure temperatures from -10°C to 400°C with an accuracy of ±2°C. Its 120x90 pixel IR resolution and 150mK thermal sensitivity provide detailed thermal images.

  • Intuitive touchscreen interface: The large 2.8” color touchscreen makes navigating menus and adjusting settings very easy. Images can be frozen, saved, and reviewed onscreen.

  • Rugged and portable: With an IP65 rating and 2m drop resistance, the UTi165A is built to withstand harsh environments. Its handheld size and rechargeable battery make it highly portable.

  • Temperature alarms: Users can set high and low temperature alarms that trigger audible and visual warnings for potential hot spots or cold leaks.

  • Connectivity: Micro SD card slot for saving thermal images. Micro USB port for charging and PC connection.

Market Analysis

With the continuous advancement of industrial technology and the expansion of application fields, the thermal imager market is showing a trend of sustained growth. Major manufacturers are increasing their research and development investment, launching more competitive products, and improving product competitiveness by continuously optimizing performance and reducing costs. At the same time, the application of thermal imagers in fields such as construction, medical care, and industrial inspection is continuously expanding, providing tremendous potential for further market growth. In the future, as the demand for safety and efficiency continues to increase, thermal imagers will be applied in a wider range of fields and become an indispensable tool in various industries.

Technical Background

Thermal imagers utilize infrared detectors to perceive the infrared radiation emitted by objects and convert it into visual images, thereby presenting the temperature information on the surface of objects. Its working principle is based on the physical characteristics of thermal radiation, where objects of different temperatures emit infrared radiation of varying intensities. The thermal imager detects and records these radiation levels, undergoes signal processing and image reconstruction, and finally generates thermal images. Key technical indicators of thermal imagers include resolution, sensitivity, temperature measurement range, etc. Resolution determines the clarity of the image, sensitivity affects the thermal imager’s ability to detect subtle temperature changes, and the temperature measurement range determines its applicability in different scenarios.

Image Quality

The UTi165A produces reasonably detailed thermal images with good contrast and color palettes. While not as crisp as higher-end models, the image quality is very good for most troubleshooting and inspection applications. The on-screen fusion feature that overlays visible light and IR images is useful for orienting hot spots.

Technical Parameter Analysis

The performance of a thermal imager is mainly determined by key parameters such as resolution, sensitivity, and temperature measurement range. The higher the resolution, the clearer the image, which can display more details and help users more accurately analyze the detected objects. Sensitivity refers to the thermal imager’s ability to detect temperature differences, usually expressed in mK (millikelvin). The higher the sensitivity, the faster the thermal imager responds to subtle temperature changes, and the more precise the detection results. The temperature measurement range determines the environmental range in which the thermal imager is applicable, and different application scenarios have different requirements for the temperature measurement range. Therefore, when choosing a thermal imager, it is necessary to comprehensively consider these key parameters based on actual needs and usage scenarios to obtain the best user experience.

Ease of Use

Despite the small screen, the touchscreen interface works well for navigating menus and adjusting settings like emissivity, alarms, color palettes, etc. The interface is intuitive and options are responsive. The small form factor combined with the easy interface make the UTi165A a very user-friendly design.

Functional Features

In addition to the basic temperature measurement function, thermal imagers also possess a range of advanced features. For example, some high-end thermal imagers are equipped with image enhancement technology, which can improve image quality and enhance the resolution capability for subtle temperature changes. Furthermore, usability is also an important consideration for users when choosing a thermal imager. A thermal imager with easy operation and a user-friendly interface can improve work efficiency and reduce the likelihood of errors. Connectivity and compatibility are also issues to be concerned about. Some thermal imagers support connection with smartphones or computers, facilitating data transmission and image analysis, thereby improving work convenience and efficiency.


The IP65 water/dustproof rating and 2 meter drop rating allow this camera to withstand harsh working conditions. The plastic casing feels solid and the screen/buttons have protective silicone. Overall, the UTi165A seems to live up to its rugged durability claims.

 UNI-T UTi165A Unit Thermal Imager


This thermal imager is a versatile tool well-suited for:

  • Finding heat leaks in buildings and HVAC systems
  • Locating hot spots in electrical systems and machinery
  • Detecting plumbing or moisture issues
  • And much more - any application where identifying temperature differences is needed

User Feedback:

The UTi165A has very positive reviews. Users mention it is easy to use with intuitive menus and clear thermal images. The compact size and long battery life make it convenient for inspections. Most users say it provides very good value for the price. Complaints are minor - the lack of onboard storage and lower resolution than premium models.


  • Accurate temperature measurements
  • Crisp, high-contrast thermal images
  • Rugged and durable construction
  • Intuitive touchscreen interface
  • Long battery life per charge
  • Reasonably priced for performance


  • Lower resolution than high-end models
  • Lack of onboard storage - SD card required
  • Smaller screen than deluxe models


At around $400, the UTi165A is affordably priced given its capabilities and image quality. It provides better value than cheaper models with lower resolution or accuracy. The ruggedness and intuitive touchscreen also help justify the price.


The UNI-T UTi165A thermal imager, with its accurate temperature measurement, clear image quality, and excellent usability, has become the preferred tool for professionals and DIY enthusiasts. Its rugged and durable design, coupled with its reasonable price, further enhances its attractiveness, providing users with a high-quality detection experience. Overall, the UNI-T UTi165A is an outstanding and affordable thermal imager, deserving widespread attention and application.

Box Includes:

  • UTi165A thermal camera
  • Rechargeable Li-ion battery
  • Battery charger
  • Micro USB cable
  • SD memory card
  • Hard carrying case
  • Hand strap
  • Quick start guide


  • Infrared resolution: 120 x 90 pixels
  • Thermal sensitivity: ≤150mK
  • Temperature range: -10°C ~ 400°C
  • Basic accuracy: ±2°C or ±2% of reading
  • Field of view: 51° x 38°
  • Focus: Fixed focus
  • Image frequency: ≤9Hz
  • Emissivity: Adjustable 0.10 to 0.99
  • Image storage: Micro SD card
  • Interfaces: Micro USB 2.0, SD card slot
  • Display: 2.8 inch color LCD touchscreen, 320 x 240 pixels
  • Battery: Rechargeable Li-ion battery, life ≥4 hours
  • Operating conditions: -10°C to +50°C

How to Use:

  1. Charge battery fully before first use
  2. Insert charged battery and SD card
  3. Point camera lens at target and adjust IR focus
  4. Adjust emissivity setting if needed
  5. Use touchscreen to freeze/analyze images
  6. Save images to SD card for recording
  7. Transfer images to computer via USB cable