FLIR K1 Situational Awareness Camera and T127722ACC Retractable Lanyard

Published on Aug. 15, 2023, 7:42 p.m.

Thermal imaging technology is an advanced technique that generates images by detecting the infrared radiation emitted by objects. With this technology, thermal imaging cameras can capture temperature differences between different objects and convert them into visible images, providing users with a new perspective in low-visibility environments. In the work of frontline workers such as firefighters, emergency responders, and search and rescue teams, thermal imaging cameras play an indispensable role in helping them quickly locate targets, assess situations, improve work efficiency, and ultimately save lives and property.

The FLIR K1 is a compact and rugged thermal imaging camera designed for firefighters and first responders. It provides enhanced situational awareness in low visibility conditions like smoke or complete darkness. The T127722ACC retractable lanyard allows secure attachment of the K1 camera for fast access and hands-free operation. This review covers the key features, image quality, build, ergonomics, battery life and overall performance of this specialized gear.

 FLIR K1 Situational Awareness Camera and FLIR Systems T127722ACC Retractable Lanyard


The K1 camera has a compact rectangular shape measuring just 208 x 85 x 65mm and weighing 0.9lbs with the battery installed. It is designed to be handheld or mounted on gear. The T127722ACC lanyard attaches securely to the camera body allowing quick access when needed. The K1 provides a 57° x 44° field of view and detects temperatures from -10°C to 400°C. It can store up to 10,000 images internally. A bright LED flashlight is integrated to illuminate dark scenes.

Key Features

  • 160x120 thermal imaging sensor
  • Integrated 320x240 digital visual camera
  • Bright LED flashlight with 300 lumens output
  • Rugged IP67 water resistance
  • Save up to 10,000 radiometric JPG images
  • 5.5 hours battery life
  • Weighs just 0.9 lbs

Technical Background

Thermal imagers create images by detecting the infrared radiation emitted by objects. Their operation principle is based on the temperature differences of objects; objects at different temperatures emit infrared radiation of varying intensities and frequencies. The thermal imager captures and converts this radiation into visible images. Key technical indicators of thermal imagers include resolution, sensitivity, temperature measurement range, etc. Different products may vary in these indicators, and users need to weigh their specific needs when choosing.

Design and Build Quality

The K1 features an IP67 rated water and dust resistant polyphenylsulfone body that is also rugged enough to withstand 2 meter drops. Large rubber overmolded surfaces provide shock protection and grip. The compact rectangular design can be operated with one hand or mounted on gear with the optional retractable lanyard. Fit and finish is excellent.
 FLIR K1 Situational Awareness Camera and FLIR Systems T127722ACC Retractable Lanyard

Image Quality

While the 160x120 sensor provides relatively low resolution, the thermal images are very usable for situational awareness. Crisp heat signatures stand out clearly against dark backgrounds. The integrated digital camera provides higher resolution visible light images. MSX image fusion overlays key details from the visual camera onto the IR images. Image quality is excellent for a compact thermal imager.

Technical Parameter Analysis

  • Resolution: The resolution of a thermal imager determines the clarity of the image, usually expressed in pixels. Thermal imagers with higher resolutions can provide clearer and more detailed images, helping users to identify targets more accurately.
  • Sensitivity: Sensitivity refers to the ability of a thermal imager to detect temperature changes, usually expressed as the minimum temperature change. Higher sensitivity means that the thermal imager can more accurately capture temperature differences, which is crucial for detecting subtle temperature changes.
  • Temperature Measurement Range: The temperature measurement range of a thermal imager determines its applicable environment and scenarios. Different products have different temperature measurement ranges, and users need to consider their actual needs when choosing.

Ease of Use

A backlit LCD screen and simple 3 button interface allows easy operation of the basic functions. Images can be saved, reviewed, zoomed and palettes changed easily. The menu system allows access to settings adjustments. The K1 turns on quickly in about 15 seconds. Ergonomics are good thanks to the lightweight compact size and rubber grips. The camera can be operated easily with one hand.

 FLIR K1 Situational Awareness Camera and FLIR Systems T127722ACC Retractable Lanyard

Connectivity and Storage

The K1 has onboard storage for up to 10,000 images saved as JPEGs on 4GB of internal memory. Images can be offloaded via the USB-C port and FLIR Tools software. WiFi or Bluetooth connectivity would have been useful for real-time streaming or remote control. Lack of wireless connectivity is a minor shortcoming.

Battery Life

Battery life is impressive at 5.5 hours of continuous use. This allows the K1 to operate through an entire work shift without recharging. Spare batteries would be recommended for extended deployments. The battery charges to 90% in 4 hours and 100% in 6 hours.


The K1 comes standard with a USB cable and lanyards. The T127722ACC retractable lanyard allows versatile hands-free use. A wide range of optional accessories are available including extra batteries, mounts, cases, adapters and more.

Use Cases

The FLIR K1 thermal camera is ideal for:

  • Firefighters - Gain situational awareness in smoke or darkness during fire operations
  • First responders - Quickly locate victims and identify hazards at incident scenes
  • Search and rescue - Detect heat signatures of missing persons in wilderness/disaster areas
  • Law enforcement - Support tactical operations and identify suspects at night

User Feedback

Based on the provided information, here is an analysis of potential user feedback for the FLIR K1 Situational Awareness Camera and the accompanying T127722ACC Retractable Lanyard:

  1. Positive Feedback:
  2. Enhanced Situational Awareness: Users may appreciate the camera’s ability to quickly assess scenes in challenging conditions such as darkness and smoke, enhancing their effectiveness in emergency situations.
  3. Compact and Rugged Design: Positive remarks might focus on the camera’s compactness, making it easy to carry and use in various scenarios. The rugged construction, capable of withstanding drops and water resistance, could also be praised for its durability.
  4. Integration of Flashlight: The integrated flashlight feature could receive positive feedback for its usefulness in illuminating scenes, aiding in navigation, and managing crews effectively.
  5. Documenting Capabilities: Users may find the ability to save up to 10,000 sets of radiometric thermal and visual images beneficial for documentation and reporting purposes, streamlining their workflow.
  6. Convenience of Lanyard: Customers might appreciate the retractable lanyard accessory for its convenience in securing the camera while allowing freedom of movement.

  7. Constructive Criticism:

  8. Image Quality: Some users might desire higher resolution thermal imaging capabilities for more detailed visuals, especially in critical situations where minute details matter.
  9. Battery Life: There could be feedback regarding the battery life, with users potentially expressing the need for longer operating times to ensure continuous usage during extended missions or operations.
  10. Price Consideration: Despite the bundle offering, price-conscious users might comment on the overall cost and whether the features justify the investment compared to alternative options in the market.
  11. User Interface and Controls: Feedback might touch upon the user interface and ease of controls, with suggestions for improvements in terms of intuitiveness and accessibility, especially in high-stress environments.
  12. Customer Support and Warranty: Users might value comprehensive customer support and warranty services, expressing preferences for hassle-free assistance in case of any issues or concerns with the product.

  13. Feature Requests:

  14. Advanced Imaging Modes: Some users might request additional imaging modes or features to enhance versatility and adaptability to different scenarios and environments.
  15. Integration with Other Devices: Requests may be made for seamless integration with other devices or systems commonly used by first responders, further enhancing interoperability and functionality.
  16. Training and Resources: Users might appreciate access to comprehensive training resources or materials to maximize their proficiency in utilizing the camera effectively during emergency situations.

Overall, the FLIR K1 Situational Awareness Camera and its accompanying accessories offer valuable features for first responders, but potential areas for improvement and additional features may emerge based on user feedback and evolving needs in the field.


  • Lightweight and compact
  • Bright integrated flashlight
  • Easy to use controls
  • Rugged water/dust/shock proof design
  • Large onboard storage capacity


  • Lower resolution thermal sensor
  • Lacks wireless connectivity
  • High cost

 FLIR K1 Situational Awareness Camera and FLIR Systems T127722ACC Retractable Lanyard

Brand and Service

The K1 is manufactured by FLIR Systems, the industry leaders in thermal imaging cameras. FLIR offers a wide range of accessories and one year warranty on parts and labor. Service is available from FLIR authorized repair centers worldwide.


The FLIR K1 thermal camera provides outstanding situational awareness and utility in a highly compact and rugged package. It gives firefighters and first responders an invaluable extra set of eyes during emergencies and low visibility situations. Excellent ergonomics, generous storage and long battery life make it easy to use. Lack of wireless connectivity is a minor shortcoming. Overall the K1 delivers huge utility and capability in a go-anywhere package.


  • Thermal sensor: 160x120 pixels
  • Digital camera: 320x240 pixels
  • Temperature range: -10°C to 400°C
  • Storage: Up to 10,000 images
  • Battery: 3000 mAh Li-ion, 5.5 hours
  • Size: 208 x 85 x 65 mm
  • Weight: 0.9 lbs with battery

Box Includes

  • K1 Camera
  • Rechargeable battery
  • USB-C cable
  • Wrist and gear lanyards
  • Hard transport case
  • Quick start guide

Usage Tips

  • Fully charge battery before first use
  • Adjust thermal palette and brightness as needed
  • Enable flashlight for visible scene illumination
  • Use MSX fusion to overlay IR on visual images
  • Mount camera with retractable lanyard for hands-free use
  • Offload images regularly to clear internal storage