Flir Thermal Security Camera Review – The Best Security Camera for Your Home

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Today we will discuss the best thermal security cameras from Flir.

From the most advanced designs to the affordable ones suited for small homes, we will cover the entire range of products for you.

The point is…

When it comes to your home security, there shouldn’t be any compromises. This is where thermal security cameras stand out by delivering crip images in critical environments where dust, light fog, or smoke are an issue.

Now, the current video surveillance market contains a large number of players. And then there is Flir. Veterans in the field know that Flir security cameras make the best use of thermal imaging technology to deliver the finest security solutions.

But, let me tell you, choosing the right one from the wide range of choices is stepping into tricky terrain.

So here’s the most important part: 

The products FLIR Elara FB-309-O and FLIR Saros DM-392 are two of our favorite choices for home security. But the rest are also excellent picks for a variety of environments.

Let’s get down to business.

The Best Flir Thermal Security Cameras

ProductProduct NameKey FeaturesSpecifier
FLIR Elara FB-309-OElara™ FB-Series O“Plug-and-play” compatibilityAffordable priceBest for small homes
FLIR Elara FB-695 IDElara™ FB-Series IDAdvanced analyticsA wide range of FOVBest for bad weather conditions
FLIR Elara FC-304 IDELARA™ FC-Series IDPTZ with auto-trackingDynamic Detail EnhancementBest for outdoor thermal imaging
FLIR Elara FC-334RELARA™ FC-Series R (Security)Temperature measurementFlexible notificationsBest for fire prevention
FLIR Elara DX-650FLIR Elara DX-SeriesExcellent image qualityTopclass durabilityBest for extreme weather conditions
FLIR Saros DM-392Saros DM-SeriesDual sensor viewing modeMultiple alarm functionsBest for Indoor security
FLIR Saros DH-390 DomeSaros™ DH-390 DomeAdvanced analyticsOutdoor intrusion detectionBest for perimeter protection
FLIR Triton A310PTTRITON™ A310 PT (Security)Temperature detectionAutomated safety monitoring Best for equipment monitoring
FLIR Triton F-644 IDTriton™ F-Series IDLong detection rangeAdvanced analytics with PTZ trackingBest for critical infrastructure
FLIR Triton PT-606Z HDTriton™ PT-Series HDDual sensor security systemRugged designBest state of the art security system

10 Best Flir Thermal Security Camera Reviews

Here’s a look at the top 10 Flir security camera systems that you can choose from.

1. FLIR Elara FB-309-O



  • Resolution of 76,800 pixels
  • 12u pixel pitch
  • IP66 rated
  • 9° to 95° field of view
  • Operating range -40°C to 50°C

The camera uses an uncooled VOx Microbolometer to detect infrared signals. The system offers superior optical clarity within short to medium-range distances. Even in complete darkness, you can rely on the device to deliver images with superior contrast.

The camera can also tackle harsh environments effectively. Humidity is one factor that can affect camera permanence. But this model can operate effectively between 10 to 90 percent humidity.

In addition, the device also comes with wide and narrow lens options for maximum versatility. You can also pair it up with FLIR TRK analytics encoders to enable PTZ tracking. This can classify human or vehicular intrusions accurately.

Lastly, the compact size and lightweight built makes the unit easy to setup

2. FLIR Elara FB-695 ID


  • Resolution of 76,800 pixels
  • 17u pixel pitch
  • IP66 rated
  • 9° to 95° field of view
  • Operating range -40°C to 50°C

This is another thermal camera from the Elara series which comes with similar features. The main difference is, it has integrated onboard analytics for a varied range of effective detection.

These include advanced features like fence trespassing detection, tampering detection, intrusion detection, etc. Other than that, there’s an easy web-based configuration system for convenience.

These features ensure accurate perimeter monitoring and low false alarms.

The camera also comes with IP66 waterproofing and the ability to tackle extreme temperatures and high humidity. Also, the device is easy to set up. You can integrate it with third-party video management systems and the FLIR United VMS system as well.

3. FLIR Elara FC-304 ID


  • Resolution of 76,800 pixels
  • 4x continuous E-Zoom
  • IP66 and IP67 rated
  • 4.3° to 90° field of view
  • Operating range -50°C to 85°C
  • Supports 32GB SD Card

This is a premium grade FLIR thermal security camera designed for monitoring and perimeter protection. The unit comes with multiple resolutions and lens types to offer the best configuration for your requirements. In other words, it’s flexible enough to adapt to a wide range of site conditions.

Moreover, the unit also has a Dynamic Detail Enhancement feature to offer superior contrast even in low light conditions. The high-quality lenses ensure sharp images in a wide range of conditions.

The onboard analytics can detect humans and vehicles accurately. At the same time, it can ignore animal and foliage movements to reduce false alarms. 

Sounds impressive, right?

The built quality is rugged and it can withstand shocks and vibrations. In addition, it can operate in conditions of extreme temperatures and humidity. On the whole, this is a camera that you can depend on even in adverse weather conditions.

The best part is, the device comes with a 3-year warranty on the camera and a 10-year warranty on the sensor.

4. FLIR Elara FC-334R


  • Resolution of 76,800 pixels
  • 25 µm pixel pitch
  • 4x continuous E-Zoom
  • IP66 and IP67 rated
  • 34° × 28° field of view
  • Continuous operating range -50°C to 70°C 
  • An accuracy of +/-5°C or 5% of reading 

Apart from thermal monitoring, this Flir security camera has a non-contact temperature measurement sensor. So it can be used for security as well as fire detection. It’s the right choice for power stations, factories with heavy equipment, and other critical installations.

The temperature measurement range is between -10°C to 110°C. Once the ambient temperature exceeds the preset limit, the system automatically triggers an alarm.

Coming the image quality, it is equipped with Dynamic Detail Enhancement (DDE). So you’ll get a high-quality image even through smoke, dust, or fog. On top of that, there is a 4x digital zoom.

The device offers standard video outputs in IP and analog video. That makes it easy to integrate it with an existing security system and third-party video management systems

The unit is designed for industrial environments. So it has a rugged built quality and a corrosion-proof construction. Also, it is resistant to shocks and vibrations. In addition, it has surge immunity from AC Power Lines.

On the whole, a sharp and reliable performer which is best suited for industrial applications and large homes.

5. FLIR Elara DX-650


  • Spectral range of 7.5 μm to 13.5 μm
  • 4x continuous E-Zoom
  • IP66 and NEMA-4X-rated
  • Pan/tilt/zoom (PTZ) features
  • Operating range -40°C to 60°C
  • An accuracy of +/-5°C or 5% of reading

This is a multispectral security camera designed to perform in the harshest of conditions. The camera also combines thermal and visible light imagers to deliver top quality images from the darkest corners.

The device also comes with an onboard IR illuminator and 4K resolution ensures sharp image clarity even in extreme weather conditions. The optical zoom extends to 31x to capture the smallest details.

Beyond that, the PTZ functions give the viewer a large range of visibility. The solid built quality makes it a practical choice for infrastructure sites, transportation centers, and remote facilities.

What’s more, you can also pick a  lens wiper with this camera. It can be remotely operated for clear visibility in extreme weather conditions. Quite simply, a great choice for outdoor installation.

The device is easy to set up and it comes with enhanced cybersecurity measures to prevent threats. Then again, the pendant form is discrete and can be used in any setting.

Lastly, there is seamless integration with existing platforms or the FLIR United VMS platform. All in all, an end-to-end solution for monitoring all types of environments.

6. FLIR Saros DM-392


  • Spectral range of 7.5 µm to 13.5 µm
  • 92° x 69° Field of view
  • IP66 rated
  • Pan/tilt/zoom (PTZ) features
  • Operating range -40°C – 55°C in cold start
  • 12 µm pixel pitch

The Flir Saros comes with a top-quality sensor enclosed in a tough, weatherproof housing. The unit combines a 4K visible light camera with dual thermal sensors to deliver a crisp image in low light conditions.

The Saros has video analytics to detect humans and vehicular movements. The multiple in-built IR illuminators offer the necessary illumination for smooth video capturing at night. To top it off, you get superb alarm accuracy and the fast response time of the camera.

Among the other features, the camera includes 2-way audio and white visible-light LEDs. This allows the security personnel to address intruders in real-time. There’s also a local SSD storage capability.

Note, the device streams video with end-to-end encryption. It offers protection against cybersecurity threats and is guarded against unauthorized re-programming. Needless to say, it can be integrated with all major video management systems.

Setting the camera is a hassle-free process, making it a cost-effective outdoor security solution.

7. FLIR Saros DH-390 Dome


  • Spectral range of 7.5 µm to 13.5 µm
  • IP66 rated
  • Thermal sensitivity <50mK
  • Visible sensor resolution 1920 × 1080
  • Thermal frame rate of 10 FPS
  • Operating range -40°C to 60°C
  • 12 µm pixel pitch

This is an affordable and easy to use choice that has tons of useful features necessary for video surveillance. The combination of dual FLIR Lepton thermal sensors and a 4k camera delivers excellent images.

Beyond that, it has IR illuminators that can help in monitoring of wider areas. It is designed to look beyond sun glare, smoke, rain, or dust. There are also visible LED illuminators and a bi-directional audio interface. This allows security professionals to respond effectively through actionable alerts.

Next, it has advanced analytics that can effectively recognize humans and vehicular traffic along with cross-line detection. This reduces the chances of false alarms to a great extent. 

What about environmental protection?

There is the IP66 rating along with shock and vibration protection.

The open architecture of the system allows easy integration with leading monitoring software and video management systems. It offers end-to-end encryption and is connected to FLIR’s cloud service. 

This results in secure connectivity through mobile broadband services. In addition, there is configuration locking to prevent any chances of tampering.

Overall, a feature-packed device with top-class reliability.

8. FLIR Triton A310PT


  • Spectral range of 7.5 µm to 13.5 µm
  • IP66 rated encapsulation
  • Automatic or manual focus
  • 128 programmable presets
  • 8x digital zoom
  • Operating range -25°C to +50°C
  • 25 µm detector pitch

If you’re looking for an advanced grade security camera, this is the right pick. Flir has effectively combined a top-grade thermal sensor with an HD visible-light imaging sensor to deliver superior performance.

The device can also detect minor changes in the surface temperatures of equipment and areas. The advanced features include a spot meter, area, and isotherm functions. The device can trigger alarms in case the temperature limits are exceeded. There are 6 in-built alarm functions for use. 

This makes it a great choice for monitoring substations, waste bunkers, or industrial facilities.

The camera also comes with an 8x zoom for capturing details. Also, it can be panned or tilted for capturing wider areas. Not to forget, it’s ruggedly designed to withstand rough conditions.

Here’s a cool feature- the device has automatic heaters to melt ice from the camera screen.

The camera can be controlled over an ethernet network. In addition, it can automatically transfer files and emails to a fixed point.

However, this is a pricey device. But undoubtedly, it’s one of the most advanced Flir thermal security cameras you can pick.

9. FLIR Triton F-644 ID


  • Spectral range of 7.5 µm to 13.5 µm
  • IP66 rated
  • 44° × 36° Field of View
  • 4x e-zoom
  • Operating range -40°C to +70°C
  • 17 µm pixel pitch

This is another high-end product from Flir. The combination of superior thermal imaging and effective onboard analytics deliver precise images in varying light conditions. There’s also a 1080p HD visual light sensor for superior image generation.

The camera delivers a reliable performance be it in total darkness or under the dazzling sun. That ensures superior threat detection. The onboard analytics improves the accuracy of the alarms. The sharp images and the 4x zoom ensures effective detection over longer distances.

Other advanced features of this Flir security camera include intrusion detection and fence trespassing. The end result is an optimization of time and budget.

The rugged built ensures smooth operation in harsh weather conditions. The device can stream IP and analog video outputs simultaneously. So it can be easily integrated with any existing analog system.

Flir also offers a 3-year warranty on the camera and a 10-year warranty on the sensor.

10. FLIR Triton PT-606Z HD


  • Spectral range of 7.5 µm to 13.5 µm
  • IP66 rated
  • 8.6°×6.6° Field of View
  • 30x optical zoom and 12x digital zoom
  • Operating range -40°C to +70°C cold start
  • 17 µm pixel pitch

First of all, this is the most advanced dual sensor Flir security camera. It has a superior thermal lens and a 1080p HD camera to deliver outstanding clarity to the images. It’s versatile enough for use in low or bright light conditions in indoor or outdoor settings.

Apart from the wide dynamic range the camera also has a high zooming range. There’s also 360-degree panning and tilting functionality. That makes it a great device for securing larger areas and perimeters. 

Like all other Flir security systems, they are ruggedly built. Besides, the de-icing feature makes it a great choice for extreme weather conditions. This reduces the maintenance time to a large extent.

The camera uses an open IP for easy plug-and-play integration. In addition, it can be integrated with FLIR’s United VMS and other fixed cameras for effective tracking. Simultaneous IP and analog outputs are also available.

The bottom line, this is one of the best Flir security cameras you can pick.

How thermal imaging works

We have already discussed the mechanism of thermal imaging in detail in our previous articles. Here’s a quick look at how a Flir home security system based on thermal imaging works.

To start with, any heat or thermal radiation results in the emission of infrared radiation. Now, infrared radiation is an integral part of the electromagnetic spectrum. It lies just below the frequency of red visible light. 

Here’s something interesting- even cold objects like blocks of ice emit some amount of infrared radiation.

In a thermal imaging camera, a lens focuses the infrared light over an infrared detector. It is then sent to an electronic sensor where the data is converted into an image. 

The thermal sensors are highly sensitive and can detect temperature differences as small as 0.01°C.

Finally, the image is visible on the screen or a viewfinder. The sensor resolution can vary and the image can range between 80 x 60 to 1280 x 1024 pixels. 

Point to be noted- thermal sensors need to detect wavelengths that are larger than visible light. That makes the sensor elements larger in size. So thermal cameras usually have fewer pixels than normal cameras of the same size.

The Advantages of Thermal Security Cameras

When you’re looking for a 24/7 monitoring solution for your home, a combination of multiple Flir thermal imaging cameras is a great option. So let’s take a look at some of the major advantages of a Flir security system using thermal cameras.

  1. For the perimeter protection of a property, there might be outdoor conditions where no or limited light is available. Thermal cameras are an ideal choice for such cases. 
  2. The advantage of a thermal camera is, it can detect any irregularities in the heat flow inside a room or a building. So you get better safety when it comes to fire hazards. Moreover, it allows you to detect potential issues related to air leakage or electrical faults.
  3. You don’t need to arrange for separate artificial illumination to keep your cameras functioning at night. Now that can result in significant cost savings.
  4. The thermal cameras come with a wider imaging range that reduces the need for installing more cameras and mounting poles. They also need much less maintenance than ordinary cameras.
  5. A normal security camera can trigger false alarms due to wind, rain, insects, or tree branches. But thermal imaging cameras eliminate these issues to deliver a more accurate intrusion detection system.
  6. One big advantage of a Flir thermal security camera is that it can deliver high-contrast images in all light conditions. It’s a smart choice for detecting persons or objects in places where they shouldn’t be. The technology is also effective for detecting a person hiding behind bushes or in a shadow.
  7. In case you already have a video surveillance system in your home, a thermal camera is a great way to upgrade the system. They can also be integrated with all major surveillance systems.
  8. It may happen that a normal camera gets blinded by bright light, fog, or heavy rain. Such scenarios can be avoided by the use of thermal cameras.

Important Things to Know Before Choosing a Flir Home Security Camera

Here are a few technical features that you should know about before picking a Flir security system.


A microbolometer sensor is the most commonly used infrared detector in any Flir thermal security camera. In most cases, they are built from processes involving vanadium oxide (VOx) or amorphous silicon (a-Si).

A typical microbolometer is made from an array of small sensors that detect heat signals ranging between 7 to 14µm in wavelength. Basically, when an infrared wave strikes a sensor element, some heat is generated. This causes a change in electrical resistance. This variation is converted into temperature values and then into a graphical image.

These units are smaller in size and lighter in weight. As a result, power consumption is reduced, making a device more cost-effective.

Thermal Pixel Pitch

The Microbolometer pixels come in a complex shape. Pixel pitch refers to the center-distance between two pixels. It is measured in microns (µm). Most manufacturers, including Flir use 17 μm pixel-pitch arrays in their devices.

Spectral range

The spectral range refers to the range of wavelengths that the camera sensor can detect. The Flir optical gas detection cameras have a spectral range between 2µm to 5µm. So they are termed mid-wave cameras.

On the other hand, the spectral range of thermal cameras is between 8µm to 14µm. So they are long-wave cameras, more suited for activities like electrical inspection and firefighting.

Cooled and uncooled thermal detectors

This is one aspect that you will notice in the specifications of every Flir thermal security camera system. Cooled thermal detectors require additional equipment to operate in extreme temperatures. In addition, the cooling equipment is bulky and expensive. Also, it requires a significant cooling-down time after use.

Naturally, uncooled thermal sensor technology is the preferred choice for lightweight and portable devices. This makes them useful in the production of affordable thermal imaging applications. Actually, uncooled sensors less sensitive than cooled thermal sensors. But they are a practical choice for commercial applications.

Field of View (FOV)

This is the extent of a view that the camera lens can capture at any given moment. Lenses with a wide-angle FOV are needed when you need to view closer objects. This can range from 45° to even higher values. 

To view distant objects a telephoto lens is needed. These can have a FOV between 12° to 6°. Many cameras come with multiple lenses that make them highly versatile.

IR Resolution

Resolution is more important in the case of thermal imaging than that of digital imaging. That’s because it affects the accuracy of temperature measurement.

The resolution depends on the number of pixels in the camera. With a higher number of pixels, the camera can capture better details with more visual resolution. This results in a more accurate measurement of temperature variations. With a high resolution, the camera can function from a larger distance from the object without losing accuracy.

Thermal Security Camera Buying Guide

As you can see, thermal security cameras offer a range of security features. But here’s the thing…

Different thermal security cameras are designed for different purposes. While some of them are used for home security, others are for specific functions. These include plumbing, electrical works, firefighting, hunting, and others.

Most importantly, you need a device that offers quality and dependability and suits your purpose of use.

So before you get lost in the vast range of options, here are a few points that you need to keep in mind.


Obviously, a security camera that delivers blurry images is practically useless. So make sure that the camera comes with the right sensor resolution that delivers sharp images even in darkness. 

Apart from the resolution of the thermal sensor, the optical camera should also come with full HD resolution. Ideally, you should buy a camera with the highest resolution that your budget allows.

Motion detection

This is a useful feature that starts recording only when motion is detected. Sounds convenient? Not exactly.

In many cameras, motion detection can raise false alarms in case of animal or foliage movement. However, the Flir security camera software comes with the right analytics that can detect motion accurately. This makes them a hassle-free choice for outdoor use.


The reliability of an infrared camera also depends on accuracy. Ideally, the device should meet or exceed ± 2% accuracy levels.  The results should also be consistent over a period of time. Flir security cameras also allow you to input parameters like  “emissivity” and “reflected temperature” for better accuracy.


A durable outdoor camera can not only withstand harsh climates but also need less maintenance. This includes water and dust proofing, along with resistance to extreme temperature variations and humidity. The Ingress Protection (IP) rating is an important factor in this regard.

Field of View

As already mentioned, the field of view of a camera can vary depending on the lens type. If you want to keep an eye on a large room or a wide area, a large field of view is needed. If you just need to monitor a narrow area like the main entry or a passage, a narrow field of view is good enough

Temperature Sensitivity

The temperature range and sensitivity of the thermal imager should be wide enough to capture a broad range of temperatures. In addition, make sure that it has a high sensitivity. This allows the camera to capture even the smallest temperature differences on a surface.

Two-way Audio

A camera with two-way audio allows you to hear in addition to delivering an image. So you get a clearer idea of the overall situation. In addition, you can also hear what is going on beyond the visual range of the camera. 

But that’s not all.

This feature also allows you to speak through the camera. This is an effective way of dealing with an intruder in your home from a safe distance.


So let’s sum it up.

Undoubtedly, Flir is one of the top brands in this field. Flir security camera systems are one of the best options to provide complete security to a wide range of environments. From affordable design to highly specialized cameras, there are a lot of choices for home security.

Here, we listed the top 10 choices from the brand that will serve a variety of purposes ranging from small homes to large properties. You can pick a device depending on your purpose and the budget.

Also, a thermal security camera is a significant investment. So choosing a brand like Flir that offers reliability and technical support is always a good option.

Hopefully, this article was able to give you an insight into the top Flir security cameras. 

Now you’re ready to make the best choice.

Frequently Asked Questions

Do thermal cameras function only at night?

While thermal cameras are very effective to see during the night, they are equally effective during the day time. In fact, the camera can erect heat radiations, irrespective of the light conditions.

What is the best Flir security camera for a home?

That will depend on the camera features that you are looking for and the budget. In our view, the FLIR Elara FB-309-O and the FLIR Saros DM-392 are excellent choices. They can be used for both indoor and outdoor monitoring in a varied range of conditions.

Are thermal imaging and night vision the same thing?

No, not really. We have already explained how thermal imaging works. Night vision works by collecting and amplifying all the available light in a low-light scenario. Actually, it can’t deliver high contrast images like thermal imagery.

How do I clean a thermal camera lens?

The best way is by blowing or dusting with a soft cleaning brush. You can also use a commercial lens cleaner on a small cotton ball or lens tissue. Clean from the lens center to outer edges by using a gentle rolling motion. Finally, allow the lens to air dry.
About Patrick Hardi

Patrick Hardy is a graduate of the Inspection Certification Associates online home inspection course. He has gone on to start H & H Home Inspections, a multi-inspector home inspection company based in Central Florida that performs home inspections, commercial property inspections, WDO, wind mitigation inspections, and 4-point inspections. In addition to performing classroom training for ICA, Patrick also teaches continuing education classes for home inspectors.

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