YuqiaoTime HT-18 Plus Infrared Thermal Imager

Published on Aug. 15, 2023, 4:07 p.m.

The YuqiaoTime HT-18 Plus is a handheld infrared thermal imager designed for a variety of professional and DIY applications. With a high resolution 256 x 192 sensor, accurate temperature measurements, and long battery life, it provides an affordable option for troubleshooting electrical and mechanical systems.


The HT-18 Plus features a 3.2 inch display and intuitive user interface that allows for easy navigation of menus and captured images. It has a temperature measurement range of -20°C to 550°C with an accuracy of ±2°C. The built-in rechargeable battery provides up to 3 hours of continuous use.

Key Features

  • 256 x 192 IR sensor resolution for crisp, clear thermal images
  • Temperature range of -20°C to 550°C (-4°F to 1022°F)
  • ±2°C temperature accuracy
  • 3.2 inch LCD display with live thermal imaging
  • Rechargeable 2200mAh lithium battery for 2-3 hours continuous use
  • Micro USB charging and data transfer

Thermal Imaging Technology Background

Thermal imaging technology is a technique used to observe and measure the surface temperature of objects using infrared radiation. Thermal imagers capture the thermal radiation emitted by different objects and convert it into visible images, enabling observation and measurement of temperature distribution. The principle of operation is based on the fact that the thermal radiation of an object is proportional to its temperature. Thermal imagers capture radiation at different wavelengths using infrared sensors and convert it into images. Thermal imaging technology finds wide applications in fields such as construction, medicine, industry, and military, playing an important role in detecting abnormal heat, fault diagnosis, preventive maintenance, etc.

 YuqiaoTime HT-18 Plus(HT-18+)  Handheld Infrared Thermal Imager

Design and Build Quality

The HT-18 Plus utilizes a sturdy plastic housing that feels solid and durable. It is lightweight and easily portable at just 2.23 lbs. The front accommodates the large LCD display and dual laser pointers for targeting measurements. The side houses the focus adjustment wheel and trigger button.

The sensor lens is recessed providing protection against bumps and scratches. The Micro USB port features a protective cover when not in use. Overall, the construction feels high quality for the price point.

 YuqiaoTime HT-18 Plus(HT-18+)  Handheld Infrared Thermal Imager

Image Quality

The 256 x 192 pixel resolution produces clear, accurately focused images. Thermal sensitivity is rated at \<40 mK which enables tiny temperature differences to be visible. The level and span adjustment allows optimizing the image to highlight hot or cold spots. Overall, the image quality is very good for a handheld unit at this price.

Temperature Accuracy

The HT-18 Plus has a measurement accuracy of ±2°C in the range of -15°C to 550°C. Accuracy drops slightly to ±4°C in the -20°C to -15°C range. This level of accuracy is suitable for most troubleshooting and inspection applications. The dual laser pointers help accurately target the temperature measurement area.

Battery Life

The built-in 2200 mAh rechargeable lithium ion battery provides 2-3 hours of continuous operation on a full charge. This allows for a full day of surveys and inspections on one charge. The battery can be replaced if needed in the future.

 YuqiaoTime HT-18 Plus(HT-18+)  Handheld Infrared Thermal Imager

Expansion of Application Fields

Thermal imaging technology finds wide applications in different fields. For example, in the medical field, thermal imaging technology can be used to detect abnormal body temperature, inflammatory sites, etc.; in the construction field, it can be used to detect the integrity of wall insulation, water pipe leaks, etc.; in the industrial field, it can be used for equipment fault diagnosis, preventive maintenance, etc. In addition, thermal imaging technology also has important application value in firefighting, military, natural science research, and other fields. With the advancement of technology and the continuous expansion of application scenarios, thermal imaging technology will play an important role in more fields.

Use Cases

The HT-18 Plus is ideal for building diagnostics like finding insulation deficiencies or water leaks. It can identify electrical faults in junction boxes or machinery. Mechanical systems can be inspected for hot spots or failing components. It is also handy for HVAC troubleshooting.

Customer Reviews

The HT-18 Plus currently has a 5 out of 5 star rating based on 3 customer reviews on Amazon. Owners praise the image quality, accuracy, and ease of use. Several noted it provides great value for the capabilities. One verified purchaser called it a “very cool tool” for troubleshooting many types of systems.

  • “Crisp, clear images that easily identify issues”
  • “Very handy for preventative maintenance”
  • “Intuitive interface and accurate temperature readings”
  • “Great value for the price”


  • Accurate temperature measurements
  • Crisp, high resolution images
  • Intuitive user interface
  • Durable construction
  • Good battery life
  • Affordable price point


  • LCD can be hard to view in bright sunlight
  • Short 1 year warranty period
  • MicroUSB charging slower than USB-C

 YuqiaoTime HT-18 Plus(HT-18+)  Handheld Infrared Thermal Imager


For the price, the YuqiaoTime HT-18 Plus packs impressive specifications and performance into a handheld thermal imager. It produces high quality images and accurate temperature data perfect for building diagnostics, electrical and mechanical inspections, and HVAC troubleshooting. The intuitive operation, durable construction, and long battery life make it a great value for professionals and DIYers alike.

Market Analysis and Future Outlook

With the continuous advancement of technology and the expansion of application scope, the application of thermal imaging technology in various fields will continue to expand. There are more and more thermal imaging products on the market, and competition is becoming increasingly fierce. Major manufacturers are constantly improving the performance and functionality of their products to meet the demands of users for high-quality and high-precision products. In the future, as people’s awareness of safety, efficiency, and environmental protection increases, thermal imaging technology will play a more important role in industrial inspection, fire safety, medical diagnosis, and other fields. Meanwhile, with the maturation of technology and the reduction of costs, thermal imaging technology is expected to be widely used in more application scenarios.


  • Sensor: 256 x 192 pixels
  • Temperature Range: -20°C to 550°C
  • Thermal Sensitivity: \<40 mK
  • Focus: Manual
  • Display: 3.2 inch LCD
  • Battery: 2200 mAh lithium ion

In the Box

  • HT-18 Plus thermal imager
  • Rechargeable battery
  • USB charging cable
  • Carry case
  • User manual

How to Use

  1. Charge battery fully before first use
  2. Turn on device and adjust settings as needed
  3. Point at target area and use laser pointers to focus
  4. Pull trigger to capture thermal images
  5. Transfer images to PC via USB cable
  6. Analyze images and temperature data