• Pixfra Sirius S650 LRF thermal monocular front right view, displaying the cylindrical body and objective lens with an integrated laser rangefinder.
  • Rear left angle of the Pixfra Sirius S650 LRF thermal monocular, showing the eyepiece, side power button, and rugged cylindrical design.
  • Pixfra Sirius S650 LRF thermal monocular rear right view, highlighting the OLED display eyepiece and top-mounted control buttons.
  • Side left profile of the Pixfra Sirius S650 LRF thermal monocular, featuring the ergonomic cylindrical grip and lens-integrated rangefinder.
  • Top down view of the Pixfra Sirius S650 LRF thermal monocular, showing the menu button layout and the integrated laser rangefinder housing.
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Pixfra Sirius S650 LRF Thermal Monocular

  • Thermal Resolution: 640x512
  • Thermal Lens: 50mm
  • Pixel Interval: 12µm
  • NETD: < 18mK
  • Thermal FOV: 8.8 × 7.1°
What do these specs mean?

Understanding Thermal Specs

Thermal Resolution

Think of this like a TV screen (e.g., 1280x1024). A higher number means more pixels. More pixels give you a sharper, more detailed image, allowing you to digitally zoom in much further before the image gets blurry or pixelated.

Thermal Lens

Similar to a camera lens, measured in millimeters (e.g., 50mm). A larger lens gathers more thermal energy and "sees" further, giving you a longer detection range. However, larger lenses typically result in a narrower field of view.

Pixel Interval (Pitch)

The physical distance between pixels on the sensor, measured in microns (e.g., 12µm). A smaller number means the pixels are packed tighter together, which produces a crisper image and extends your optical magnification without needing a massive lens.

NETD (Thermal Sensitivity)

Measures how tiny of a temperature difference the device can detect. Lower is better (e.g., < 15mK beats < 25mK). A lower NETD means you get a much clearer picture in terrible weather (rain, thick fog, high humidity) and superior contrast between the animal and its surroundings.

Thermal FOV (Field of View)

How wide of an area you can see at once. A wider FOV is excellent for scanning large areas quickly to spot movement. A narrower FOV usually means the device has higher magnification, perfect for identifying specific targets at long distances.

R 62,999.00
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SKU: PFI-S650 LRF

Detection Range

Pig
Kudu
Elephant
1529mDetection
694mRecognition
347mIdentification
2294mDetection
1042mRecognition
521mIdentification
4588mDetection
2083mRecognition
1042mIdentification

Understanding the Math

We believe in honest, real-world field specifications.

Detection ranges are calculated by taking the manufacturer's baseline testing and physically scaling it to the average height of the target animal.

Recognition & Identification are calculated using Johnson's Criteria—the military standard for thermal optics. By analyzing the physical properties of the camera's lens and sensor pitch, we calculate exactly when the target will take up enough pixels on your screen to be clearly identified.

Note: High humidity, thick coats, and environmental background temperatures will reduce these maximum optical distances in the field.
Key Features & Highlights

Pixfra Sirius S650 LRF Key Features:

• Integrated Laser Rangefinder: Accurate distance measurement up to 1,000m (±1m) integrated directly into the lens body for precise target ranging.
• Extreme Thermal Range: Detect human-sized heat signatures up to 2,600m (approx. 1.6 miles).
• Ultra-Fast F0.9 Lens: Large 50mm objective lens captures significantly more thermal energy than standard F1.0 lenses for superior low-light sensitivity.
• Flagship Sensor: High-definition 640×512 @ 12µm resolution with NETD ≤18mK sensitivity ensures crisp detail in difficult weather like fog and rain.
• High Magnification: Base optical magnification of 3.45x is optimized for medium to long-range identification.
• Immersive Display: Large 0.49-inch FHD OLED (1920×1080) screen reduces eye strain and improves target recognition.
• Onboard Recording: Capture high-quality video and audio directly to the 64GB internal memory.

Product Overview
Eliminate the guesswork from your night hunting with the Pixfra Sirius S650 LRF, the ultimate evolution of the Sirius series. While detecting a target at long range is critical, knowing the exact distance is the key to an ethical and successful shot. This flagship monocular combines the extreme 2,600m detection range of the S650 with a precision integrated Laser Rangefinder, capable of measuring distances up to 1,000 meters.
The Pixfra Sirius S650 LRF retains the premium optical performance of its sibling, utilizing a massive 50mm F0.9 objective lens and a high-sensitivity 640×512 vanadium oxide detector (NETD ≤18mK). This "fast" F0.9 aperture captures significantly more thermal radiation than standard F1.0 lenses, delivering brighter, lower-noise images in challenging weather conditions.

Pixfra Sirius S650 Thermal Monocular LRF Key Features:

• Integrated Laser Rangefinder: Accurate distance measurement up to 1,000m (±1m) integrated directly into the lens body for precise target ranging.
• Extreme Thermal Range: Detect human-sized heat signatures up to 2,600m (approx. 1.6 miles).
• Ultra-Fast F0.9 Lens: Large 50mm objective lens captures significantly more thermal energy than standard F1.0 lenses for superior low-light sensitivity.
• Flagship Sensor: High-definition 640×512 @ 12µm resolution with NETD ≤18mK sensitivity ensures crisp detail in difficult weather like fog and rain.
• High Magnification: Base optical magnification of 3.45x is optimized for medium to long-range identification.
• Immersive Display: Large 0.49-inch FHD OLED (1920×1080) screen reduces eye strain and improves target recognition.
• Onboard Recording: Capture high-quality video and audio directly to the 64GB internal memory.

Pixfra Sirius S650 LRF Thermal Imaging Monocular Useful Resources:

Pixfra Sirius S650 LRF Specifications Sheet
Pixfra Thermal Imaging Products
Pixfra Thermal Outdoor App for IOS and Smartphone

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Technical Specifications

While we strive for absolute accuracy, manufacturer specifications and hardware configurations are subject to change without prior notice. For mission-critical applications, we recommend consulting our team to verify current technical data.

Thermal Specifications
Sensor TypeVanadium oxide uncooled focal plane detector
Thermal Resolution640x512
Pixel Pitch12 µm
NETD< 18 mK
Thermal Lens50 mm
Field of View8.8 × 7.1
Frame Rate50 Hz
Detection Range (1.7m Subject)2600 m
Precision, Optics & Lasers
LRF Max Range1000 m
LRF Accuracy±1
System & Display
Display Info0.49 OLED (1920 × 1080 Resolution)
Digital Zoom 1, 2, 4, 8
Storage Capacity64
Battery Life6
Physical & Environmental
Protection Level (IP Rating)IP67
Operating Temperature-30 to +55
Dimensions & Weight 213.1mm × 73mm × 83.4mm;537g
What's in the Box
Box ContentsSirius S650 LRF Monocular, Type-C Cable, Carrying Bag, Wrist/Neck Strap, Cleaning Cloth, Quick Start Guide, 18650 Battery