FLIR K33 Thermal Imaging Camera Review – Best for Firefighting

Written By Kim Goodwin is reader supported. When you buy through links on our site, we may earn an affiliate commission at no cost to you.

Are you a firefighter or searching for the best handy thermal imaging camera? The FLIR K33 is ideally suited for your budget and very handy to use. It will give a clear view while you are in low light conditions. You will get the detailed and structural aspects even if the smoke surrounds you.

The package includes FLIR K33 Firefighting Thermal Camera, Hard Transport Case, Lanyard Strap, Retractable Lanyard, Battery Charger, USB Cable, Neck Strap, Power Supply, 2 x Rechargeable Batteries, Printed Documentation.

FLIR was founded in 1978, and it is one of the leading companies in the infrared imaging industry. Initially, they are specialists in airborne applications. After some years, they started to use commercial applications. They assure superior image quality, durability, and reliability products.

After some research, we’ve provided the FLIR K33 thermal imaging camera review below.


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  • 9mm Focal length
  • 60 Hz High image frequency
  • 51 degree*38 degree field of view
  • 240 x 180 IR measurable pixels
  • Focal Plane Array (FPA) Uncooled Microbolometer
  • 2.4 lb Total Weight

Features of FLIR K33

The FLIR K33 thermal imaging camera is one of the most durable products on the market. It comes with a 240*180 resolution to provide the detailed images. If the K 33 may be dropped from the 6.6 ft height, you won’t have an issue.

The operating temperature of this camera starts from -4 degrees Fahrenheit to 185 degrees Fahrenheit. It supports the English language.

Frequency Frame Rate

It has a 60 Hz high-frequency frame rate, which provides smooth and clear images, even if you are moving. Most of the thermal camera comes with a 9 to 15 Hz frame rate, so this FLIR K33 thermal camera is the perfect choice for firefighters.


It is made of flame-resistant magnesium alloy and rubber aluminum, which ensures the durability of the device. This thermal camera is specially designed for the firefighters. This water-resistant thermal imaging camera comes with an IP67 rating. It means you can use this device in any condition, and it withstands any rugged situations.

Display Screen

The screen length is 4 inch which is very broader than many other products on the market. This large screen helps to improve the resolution.

When compared to the previous versions, this K33 model enhanced the structural and textural details. If you are in an emergency circumstance, you won’t get clear information via a minuscule screen.

For Firefighters

Once upon a time, the thermal imaging camera or thermal imagers are restricted to use by the military departments but, the firefighters used this as an essential one. It helps to make the proper decision in a critical situation. They will get more data about their surroundings. It also helps to prevent the firefighters from becoming disoriented.

Intense Detail with FLIR Flexible Scene Enhancement (FSX)

The FLIR K33 features a flexible scene enhancement technology. With this technology, you can find the safest place and where the objects are located. It can blend digital and thermal images and enhance the details of the picture. By using this thermal camera, you can see the objects through the smoke and dark environment, detect the apparent structural issues, and capture better quality images.


The manufacturer made this camera to assist users in every way. You should wear gloves when you are using this camera, even if you are a firefighter or using them in other industries.

Don’t take off your gloves even if you want to do a simple function. It is a glove-friendly thermal imaging camera.
If you want to take the picture, pull a trigger.


If you want to mount your camera on the tripod, it requires an adapter. You may also want to purchase some FLIR accessories such as a neck strap, additional battery charger, etc.

FOV47° × 35°51° × 38°51° × 38°51° × 38°
DisplayBacklit 3″ 320×240 LCDBacklit 3″ 320×240 LCDBacklit 4″ 320×240 LCDBacklit 4″ 320×240 LCD
Image StorageNoNoInternal Flash Memory Store 200 JPEGInternal Flash Memory Store 200 JPEG
Video StorageNoNoNo200 Files


This FLIR K33 comes with four different types of modes that are TI primary mode, fire mode, search & rescue mode, and heat detection mode.

TI primary mode is used for basic fire attacks and life rescuing operations.

If there is a lot of open flames specifically in structural fires, then you can use the fire mode. It is used for the higher background temperature too.

The search and rescue mode is used for the lower temperature conditions, like initial rescue attempts after traffic collisions, explorations in wooded areas, etc.

Finally, the heat detection mode is used for detecting the hotspots. Twenty percent of the hottest screen is colored red.


This thermal camera is powered by a lithium-ion battery, which gives a continuous performance for up to 4 hours. It is very impressive when compared to other high tech devices.


This FLIR K33 thermal imaging camera comes with different types of assurance. For the battery, they will give two years warranty, while five years warranty for parts and labor and it provides ten years warranty for the detector.

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Final Words

If you are a firefighter or want to work in a low light scenario, the FLIR K33 thermal imaging camera is the perfect option. This thermal camera is specially designed to work under extreme fire conditions. You will get a detailed, precise, and structural image quality by using this device. It is a worthy investment for you.

We hope so, our article about FLIR K33 will be helpful for you.

About Kim Goodwin

Kim Goodwin holds a Master's in thermal engineering from the University of Rhode Island. At Thermo Gears, she reviews most equipment that uses thermal imaging technologies.

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