Pixfra Sirius S650D Dual-View Thermal Monocular
640x512, 12µm Detector, Dual 25mm & 50mm Lens
The Pixfra Sirius S650D is a premium dual-view thermal monocular that combines a 640×512, 12µm thermal sensor with exceptional ≤18mK NETD sensitivity for sharp, detailed thermal imaging. Its standout feature is the switchable 25mm and 50mm dual-lens system, letting you move from wide-area scanning to closer observation in seconds. With a detection range up to 2600m, 1920×1080 OLED display, AI image calibration, 64GB built-in storage and up to 6 hours battery life, it is built for serious observation.
The Pixfra Sirius S650D Dual-View Thermal Monocular is the standout model in the Sirius range, and the only one to offer dual-view capability. With a simple twist, you can switch between a 25mm wide field-of-view lens for scanning large areas and a 50mm lens for more detailed observation at distance, effectively giving you two monoculars in one. This makes it a highly versatile choice for wildlife observation, conservation work, and any situation where both wide-area searching and closer thermal inspection matter.
At the heart of the S650D is a 640×512, 12µm thermal sensor with an impressive ≤18mK NETD sensitivity, delivering excellent thermal detail even in challenging conditions. Paired with its 25mm f0.88 / 50mm f1.1 dual objective lens system, it offers sharp, high-contrast thermal imagery and a detection range of up to 2600m. A 50Hz refresh rate keeps the image smooth and responsive, while magnification of 1.72x on the 25mm lens and 3.45x on the 50mm lens, plus 1x, 2x, 4x and 8x digital zoom, gives you the flexibility to adapt to changing observation needs.
Viewing comfort is equally impressive thanks to the 0.49-inch 1920×1080 OLED display, which produces a crisp, vivid image while helping to reduce eye strain during longer sessions. Pixfra’s AI-powered image calibration continuously learns from captured images to optimise picture quality over time, while useful digital features such as video recording, snapshot capture, hot spot tracking, Wi-Fi hotspot connectivity and 64GB of built-in storage add even more functionality in the field.
The Sirius S650D also reflects Pixfra’s strong focus on design and usability. Its streamlined three-button control layout supports comfortable one-handed operation, while details such as the integrated illuminated logo power button, carbon fibre styling accents and embossed focus wheel give it a premium feel. A metal lens cover adds extra protection against dust, scratches and knocks, and the robust IP67-rated housing ensures dependable performance in harsh weather and demanding environments.
Powered by a replaceable 18650 battery, the S650D provides up to 6 hours of runtime, with a quick-release battery system that makes swapping batteries fast and simple when you need longer sessions in the field. Compact for its capability at 537g, and built to operate in temperatures from -30°C to +55°C, the Sirius S650D is a highly capable thermal monocular that combines advanced imaging performance, practical digital features and genuine dual-lens flexibility in one refined package.
- Thermal sensor 640×512, 12µm, <18mK
- Lens Adjustable dual lens – 25mm f0.88 / 50mm f1.1
- Focus control Manual
- Close focus distance 25mm
- Field of view 25mm
- Field of view 50mm
- Detection range 25mm
- Detection range 50mm
- Digital zoom 1x / 2x / 4x / 8x
- Magnification 25mm
- Frame rate 50Hz
- Display 1920 × 1080, 0.49-inch OLED
- Colour palettes 6 – White Hot, Black Hot, Iron Red, Alarm, Amber, Emerald
- Storage Built-in 64GB
- FFC calibration Auto, Manual, External Correction
- Hot spot trace Yes
- Wi-Fi hotspot Yes
- Video recorder Yes
- Snapshot Yes
- Power source Replaceable 18650 battery
- Battery life Up to 6 hours, depending on temperature
- Power supply 5 VDC / 2A
- Port USB Type-C
- Operating temperature –30°C to +55°C (–22°F to +131°F)
- Protection level IP67
- Dimensions 223 × 61 × 71.4mm (8.78 × 2.4 × 2.81in)
- Net weight 537g (1.18lb)
- Dual-view functionality allowing you to switch between two viewing modes in one device for greater versatility in the field.
- Twist-to-change lens system for quick, seamless transitions between wider scanning and more detailed observation.
- Ideal for both searching and close-up observation, making it suitable for a broad range of uses rather than one fixed application.
- AI-powered image calibration that learns from captured images to help maintain strong image quality in varying conditions.
- Crisp OLED viewing experience designed to provide a clear, comfortable image during use.
- Reduced eye fatigue during longer sessions, helping make extended observation more comfortable.
- One-handed operation thanks to an ergonomic layout that keeps controls simple and easy to reach.
- Streamlined three-button control system for straightforward access to the monocular’s digital functions.
- User-friendly design focused on comfort, speed and ease of use in the field.
- Integrated video recording so you can capture key moments as they happen.
- Snapshot function for saving still images during observation.
- Built-in storage for keeping recorded footage and captured images directly on the device.
- Hot spot tracking to help quickly identify the hottest point in the scene.
- Wi-Fi hotspot connectivity for linking the monocular with compatible devices.
- Quick-release battery system that makes battery changes fast and convenient.
- Replaceable battery design for longer use with spare batteries on hand.
- Protective metal lens cover to guard against scratches, dust and everyday knocks.
- Durable weather-resistant construction built to cope with demanding outdoor conditions.
- Premium Pixfra styling with distinctive design touches such as carbon fibre accents and embossed detailing.
- Illuminated integrated power button that clearly shows device status while maintaining a clean, refined design.
- Adjustable logo illumination that can be dimmed or switched off when discretion is important.
- Versatile performance across different environments, making it well suited to wildlife observation, conservation and general thermal spotting.
- Pixfra Sirius S650D Thermal Monocular
What is the dual-view feature on the Pixfra Sirius S650D?
The dual-view feature means the Sirius S650D has two lens options built into one monocular. You can switch between a 25mm lens for wider scanning and a 50mm lens for more detailed observation at longer distances, giving you greater flexibility without needing two separate devices.
Why is the dual-view system useful?
It allows you to search large areas more easily with the wider lens, then quickly move to the higher magnification lens when you want a closer, more detailed look at a heat source or animal. It makes the monocular more versatile in the field.
Is the Pixfra Sirius S650D good for spotting at long range?
Yes, it is designed for long-range thermal observation and offers a detection range of up to 2600 metres when using the 50mm lens.
Can I use this monocular for scanning as well as detailed viewing?
Yes, that is one of its main advantages. The 25mm lens is better for scanning and covering more ground, while the 50mm lens is better for identifying and observing subjects in more detail.
How clear is the image quality?
The Sirius S650D uses a high-quality thermal sensor with very strong sensitivity, helping it produce sharp, detailed thermal images even in difficult conditions.
Does this model have a screen that is comfortable to use for long periods?
Yes, it features a high-resolution OLED display that provides a crisp image and is designed to be comfortable during longer observation sessions.
Can the monocular record video and take photos?
Yes, the Sirius S650D can record video and capture snapshots, so you can save what you see during use.
Does it have built-in storage?
Yes, it comes with built-in 64GB storage for saving recorded footage and images.
Can I connect it to my phone or another device?
Yes, it has Wi-Fi hotspot capability, allowing it to connect to compatible devices.
Is the battery removable?
Yes, it uses a replaceable 18650 battery, and the quick-release system makes battery changes fast and easy.
How long does the battery last?
Battery life is up to 6 hours, although this can vary depending on temperature and conditions.
Is the Pixfra Sirius S650D easy to use one-handed?
Yes, it has been designed with a simple three-button layout and an ergonomic shape to make one-handed use easier and more comfortable.
Is it suitable for use in bad weather?
Yes, the Sirius S650D is built with an IP67 protection rating, meaning it is designed to handle demanding outdoor conditions.
What can I use the Sirius S650D for?
It is ideal for wildlife observation, conservation work, general thermal spotting and other situations where you need to detect and observe heat signatures clearly.
Does it offer anything to improve the image automatically?
Yes, it features AI-powered image calibration, which helps optimise image quality over time based on captured images.
- Pixfra 3 year warranty
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