# FLIR T540 24° Thermal Imaging Camera # FLIR T540 24° Thermal Imaging Camera ## Key Features At A Glance - 464 × 348 pixel infrared resolution with <40 mK NETD at +30°C for fine thermal detail - 24° × 18° field of view with 17 mm focal length and 0.90 mrad/pixel spatial resolution (IFOV) - Object temperature range from −20°C to +1500°C (−4°F to +2732°F) across measurement modes - Continuous, one-shot LDM, one-shot contrast, and manual focus modes for flexible operation - Integrated laser distance meter (Class 2, 0.05–40 m) with on-image laser alignment indicator - 4-inch optically bonded PCAP touchscreen (640 × 480, IPS, Dragontrail® cover glass) - USB 2.0, Bluetooth, Wi-Fi, and DisplayPort interfaces with METERLiNK wireless sensor support - IP 54 encapsulation per IEC 60529 with 25g shock and 2g vibration ratings The FLIR T540 24° is a handheld thermal imaging camera built around a 464 × 348 pixel uncooled microbolometer detector operating across the 7.5–14 µm spectral range. The 24° configuration pairs a 17 mm focal length lens with a 0.90 mrad/pixel spatial resolution and an f/1.3 aperture, producing a 24° × 18° field of view suited to general-purpose inspection distances. Image acquisition runs at 30 Hz, with a noise-equivalent temperature difference (NETD) below 40 mK at +30°C ambient. The camera supports a range of measurement and presentation workflows documented on the datasheet: up to three live spotmeters, three live area measurements, automatic hot and cold detection within an area, difference temperature and reference temperature functions, and emissivity correction variable from 0.01 to 1.0 or selected from a built-in materials list. Image presentation modes include infrared, visual, MSX, and a resizable and movable picture-in-picture overlay. Color alarm (isotherm) options cover above, below, interval, condensation (moisture/humidity/dewpoint), and insulation conditions. ## Brand Heritage FLIR Systems was acquired by Teledyne Technologies in 2021, forming Teledyne FLIR. The FLIR brand was retained because of its market recognition in thermal imaging — when a maintenance engineer says "FLIR" they mean the same product line and engineering pedigree that has defined the thermal camera category for decades. T-Series instruments documented under the FLIR Systems name continue to be supported under the Teledyne FLIR organization. ## Accessories Supplied - Accessory box I: Power supply for battery charger; Power supply, 15 W/3 A; Printed documentation; SD card (8 GB); USB 2.0 A to USB Type-C cable; USB Type-C to HDMI and PD adapter; USB Type-C to USB Type-C cable (USB 2.0 standard) - Accessory box II: Lens cap strap; Lens cleaning cloth; Neck strap - Battery (2 ea) - Battery charger - FLIR Tools+ license card - Hard transport case - Infrared camera with lens - Lens cap, front - Lens cap, front and rear (only for extra lenses) ## Product Core & Specifications Imaging and Optical Data Infrared resolution 464 × 348 pixels UltraMax (super-resolution) In FLIR Tools (not supported when using macro) NETD <40 mK @ +30°C (+86°F) Field of view 24° × 18° Minimum focus distance 0.15 m (0.49 ft.); Macro mode 71 µm as option Minimum focus distance with MSX 0.5 m (1.64 ft.) Focal length 17 mm (0.67 in.) Spatial resolution (IFOV) 0.90 mrad/pixel Available extra lenses 42° (AutoCal); 14° (AutoCal); 6° (service calibration required) Lens identification Automatic f number 1.3 Image frequency 30 Hz Focus Continuous LDM; One-shot LDM; One-shot contrast; Manual Field of view match Yes Digital zoom 1–6× continuous Detector Data Focal plane array/spectral range Uncooled microbolometer / 7.5–14 µm Detector pitch 17 µm Image Presentation Resolution 640 × 480 pixels (VGA) Surface brightness 400 cd/m² Screen size 4 in. Viewing angle 80° Color depth 24 bits Aspect ratio 4:3 Auto-rotation Yes Touchscreen Optically bonded PCAP Display technology IPS Cover glass material Dragontrail® Programmable buttons 2 Viewfinder No Image adjustment Automatic; Automatic maximum; Automatic minimum; Manual Image presentation modes Infrared image; Visual image; MSX; Picture in picture (resizable and movable); Gallery Measurement Camera temperature range –20 to +120°C (–4 to +248°F); 0 to +650°C (+32 to +1202°F); +300 to +1500°C (+572 to +2732°F) Accuracy (ambient +15 to +35°C) ±2°C (±3.6°F) for object temps –20 to +100°C; ±2% for higher ranges Spotmeter 3 in live mode Area 3 in live mode Automatic hot/cold detection Automatic maximum/minimum markers within area Measurement presets No measurements; Center spot; Hot spot; Cold spot; User preset 1; User preset 2 Difference temperature Yes Reference temperature Yes Emissivity correction Variable from 0.01 to 1.0 or selected from materials list Measurement corrections Yes External optics/windows correction Yes Screening 0.5°C (0.9°F) accuracy at 37°C (98.6°F) with reference Alarm Color alarm (isotherm) Above; Below; Interval; Condensation (moisture/humidity/dewpoint); Insulation Measurement function alarm Audible/visual alarms (above/below) on any selected measurement function Set-up Color palettes Iron; Gray; Rainbow; Arctic; Lava; Rainbow HC Setup commands Local adaptation of units, language, date, and time formats Languages 21 Service Functions Camera software update Use PC software FLIR Tools Storage of Images Storage media Removable memory: SD card Time lapse (Periodic image storage) 10 seconds to 24 hours (infrared) Remote control operation Using FLIR Tools (via USB cable); FLIR Tools Mobile (over Wi-Fi) Image file format Standard JPEG, measurement data included; Infrared-only mode Image Annotations Voice 60 seconds with built-in microphone and speaker (and via Bluetooth) on still images and video Text Text from predefined list or soft keyboard on touchscreen Visual image annotation Yes Image sketch Yes (on infrared only) Sketch From touchscreen METERLiNK Wireless connection (Bluetooth) to FLIR meters with METERLiNK Area measurement information Yes GPS Location data automatically added to every still image and first frame in video from built-in GPS Video Recording & Streaming Radiometric infrared-video recording RTRR (.csq) Non-radiometric infrared-video recording H.264 to memory card Visual video recording H.264 to memory card Radiometric IR-video streaming (compressed) Over UVC Non-radiometric video streaming H.264 (AVC) over RTSP (Wi-Fi); MPEG4 over RTSP (Wi-Fi); MJPEG over UVC and RTSP (Wi-Fi) Visual video streaming Yes Digital Camera Resolution 5 MP with LED light Focus Fixed Field of view 53° × 41° Video lamp Built-in LED light Laser Pointer Laser alignment Position is automatically displayed on the infrared image Laser distance meter Activated by dedicated button Laser Class 2, 0.05–40 m (0.16–131 ft.) ±1% of measured distance Data Communication Interfaces Interfaces USB 2.0, Bluetooth, Wi-Fi, DisplayPort METERLiNK/Bluetooth Communication with headset and external sensors Wi-Fi Peer to peer (ad hoc) or infrastructure (network) Audio Microphone and speaker for voice annotation of images USB USB Type-C: data transfer/video/power USB standard USB 2.0 High Speed Video out DisplayPort Video connector type DisplayPort over USB Type-C Radio Operating frequency Bluetooth + EDR/LE: 2402–2480 MHz; WLAN 2.4 GHz: 2412–2462 MHz; WLAN 5 GHz: 5150–5350 MHz (DFS: only slave mode) RF output (EIRP) Bluetooth + EDR/LE: < 10 dBm; WLAN: < 17 dBm **Important:** Maximum object temperature accuracy of ±2°C (±3.6°F) and ±2% is specified for an ambient temperature of +15 to +35°C (+59 to +95°F). Charging temperature range is 0°C to +45°C (+32°F to +113°F), except for the Korean market: +10°C to +45°C (+50°F to +113°F).**Important:** The 6° extra lens requires service calibration.**Important:** UltraMax (super-resolution) is not supported when using macro mode.**Important:** Frequency band 5150–5350 MHz is for indoor use only; refer to national regulations.**Important:** Charging temperature is 0°C to +45°C (+32°F to +113°F); for the Korean market: +10°C to +45°C (+50°F to +113°F).**Important:** External 12 V vehicle power cable with standard plug is optional and not included in the standard delivery.Recommended pairing: the T540 supports METERLiNK wireless Bluetooth connection to FLIR meters with METERLiNK, allowing electrical and environmental readings from companion meters to be embedded directly in thermal images. **Please review the Manufacturer's Data Sheet to verify published specifications. Feedback on this webpage is always welcome — please reach out to your Test Architect at any time for questions or concerns. Thank you, we truly appreciate you being our customer.** ## Details - **Price:** 19099.0 USD - **Vendor:** FLIR - **Type:** Thermal Imager - **Tags:** Flir, Manufacturers, Other Equipment, product_manual_group_2, Product_new, Thermal Imaging ## Variants | Variant | Price | Available | |---------|-------|-----------| | Default Title | 19099.00 USD | In stock | ## Images - FLIR T540 24° Thermal Imaging Camera --- > Source: [ValueTronics](https://valuetronics.com/products/flir-t540-14-flir-thermal-imager-new) > Updated: 2026-05-30