PIXFRA Sirius S435 thermal monocular

Compact thermal imaging monocular for precise observations at medium to long distances
The PIXFRA Sirius S435 is a powerful thermal imaging monocular for anyone seeking a reliable and detailed observation solution at medium to long distances. With its sensitive VOx sensor, high detection range, and compact design, the model is ideal for open areas, sitting situations, and structured territory zones. Despite its strong technical features, the device remains handy and pleasantly lightweight, making it easy to transport and flexible to use.
Fine thermal imaging representation with sensitive 18 mK technology
Inside the PIXFRA Sirius S435, a VOx thermal imaging sensor operates with 384 × 288 pixels, 12 µm pixel size, and a thermal sensitivity of less than 18 mK. This allows even small temperature differences to be precisely visible. In practice, this ensures a high-contrast and reliable image representation, even when weather, vegetation, or environmental conditions make visibility difficult.
35-mm optics with high range
The 35 mm f1.0 lens enables a detection distance of up to 1800 meters, making it particularly interesting for observations at medium to long distances. The field of view of 13.7 × 10.3 m at 100 m supports clear detail recognition and targeted observation in open areas. Thus, the PIXFRA Sirius S435 is a strong choice for users who want to combine range and compact design in one device.
Optimized Image Quality through PIPS 2.0 and AAIC
For a clear and stable display, PIXFRA relies on the PIPS 2.0 firmware. Features such as improved zoom, noise reduction, and edge sharpening help to visibly optimize the image. This is complemented by the AI-supported adaptive image calibration AAIC. It continuously analyzes the image situation and supports consistently high-quality playback even under changing conditions.
Light, compact and quickly accessible
Weighing only 421 g without accessories and with compact dimensions of 194 × 65 × 54 mm, the PIXFRA Sirius S435 is a practical companion for mobile operations. The monocular fits comfortably in a bag or backpack and can be easily transported with the included case, shoulder strap, and hand strap. This way, the device is always ready for use.
Robust construction for demanding conditions
The housing is designed for practical outdoor use and is protected against dust and water according to IP67. Even in rain, fog, and changing weather conditions, the thermal imaging monocular remains reliably usable. The temperature range of -30 °C to +55 °C further emphasizes its versatility and makes the device a good choice for a variety of operational conditions.
Modern equipment for better overview
The PIXFRA Sirius S435 offers additional useful features for everyday observation alongside thermal imaging. These include hotspot tracking for quick detection of relevant heat sources, an electronic compass function for better orientation, and Wi-Fi for a stable live stream on smartphone or tablet. In addition, there is an internal memory of 64 GB available for photos and videos.
Long runtime with replaceable batteries
The power supply is provided by replaceable 18650 batteries. With a runtime of up to 7.5 hours per battery, the device is also suitable for longer observation phases. Two batteries are already included in the delivery, providing additional flexibility in use.
Technical Data at a Glance

Product TypeThermal Imaging Monocular
SensorVOx 384 × 288 pixels / 12 µm / <18 mK
Lens35 mm f1.0
Detection Distanceup to 1800 m
Field of View at 100 m13.7 × 10.3 m
Magnification3.68 to 29.4 times
DisplayOLED, 1920 × 1080 pixels
Frame Rate50 Hz
Storage64 GB internal
FeaturesAAIC, PIPS 2.0, Hotspot Tracking, electronic compass, WLAN
Protection ClassIP67
Battery Type18650 Lithium-Ion
Runtimeup to 7.5 hours
InterfaceUSB Type C
Operating Temperature-30 °C to +55 °C
Dimensions194 × 65 × 54 mm
Weight421 g

FAQ about the PIXFRA Sirius S435
What distances is the thermal imaging monocular designed for?
The PIXFRA Sirius S435 is particularly suitable for medium to long distances and offers a very good combination of range and detail representation.

How large is the internal memory?
The device has 64 GB of internal memory for photos and videos.

Is the monocular weatherproof?
Yes, thanks to the IP67 protection class, the model is protected against dust and water and is designed for demanding weather conditions.

What advantages does the AI image calibration offer?
The AAIC technology supports continuously optimized image representation and helps achieve consistent playback even in changing environmental conditions.