Factory Refurbished Pixfra Sirius S435 Thermal Imaging Monocular - 384x288, 12µm, <18mK NETD, 35mm - FR25037
The Pixfra Sirius S435 is a compact yet powerful thermal imaging monocular built for clear, reliable detection in the field. Featuring a 384×288, 12µm, <18mK thermal sensor, a 35mm f1.0 lens, and a detection range of up to 1,800 metres, it delivers impressive thermal performance in a slim ergonomic body. A 1920×1080 OLED display, AI-powered image calibration, 64GB built-in storage, Wi-Fi connectivity, and a quick-release 18650 battery system make it a versatile and user-friendly choice.
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Condition: Good
This unit is in good condition and has been very well cared for. Minor handling marks may be present. Please refer to product images for more details.
This product comes along with a neck strap and 1x battery.
NO OTHER ACCESSORIES INCLUDED.
The Pixfra Sirius S435 is a slimline thermal imaging monocular that combines advanced performance with a streamlined, ergonomic design. Built around a 384×288, 12µm thermal sensor with an impressive <18mK NETD sensitivity, it is designed to pick up even the smallest heat signatures with remarkable clarity. Paired with a 35mm f1.0 objective lens, the Sirius S435 delivers a detection range of up to 1,800 metres, making it an excellent choice for wildlife observation, conservation work, and general thermal spotting.
Image quality is a real strength of the Sirius S435. Its AI-powered image calibration continuously learns from captured images to optimise performance in changing conditions, while the 50Hz frame rate keeps the view smooth and responsive. A 0.49-inch 1920×1080 OLED display produces a crisp, vivid image that remains comfortable to view over longer sessions, helping to reduce eye fatigue. With 2.41x optical magnification and digital zoom settings of 1x, 2x, 4x, and 8x, it offers the flexibility to observe both nearby and distant targets with confidence.
Pixfra’s signature styling gives the Sirius S435 a refined and practical feel. The monocular features a three-button control layout for simple one-handed operation, along with distinctive design touches such as carbon fibre accents, embossed details on the focus wheel, and an illuminated power button integrated into the Pixfra logo. For more discreet use, the light can be switched off completely. A metal lens cover also adds extra protection against dust, scratches, and knocks in the field.
The Sirius S435 is equally strong on features, with built-in 64GB storage, video recording, snapshot capture, Wi-Fi hotspot connectivity, and hot spot tracking all included as standard. Its quick-release 18650 battery system provides up to 6 hours of runtime, allowing batteries to be swapped quickly when needed. Finished with a robust IP67 waterproof rating, a close focus distance of 3 metres, and a lightweight build of just 421g, the Pixfra Sirius S435 is a highly capable thermal monocular that delivers serious performance in a compact package.
- Thermal Sensor: 384×288, 12µm, <18mK
- Lens: 35mm f1.0
- Focus Control: Manual
- Close Focus Distance: 3 m (9.84 ft)
- Field of View: H: 7.85°; V: 5.89° / H: 13.7 m; V: 10.3 m (@100 m)
- Detection Range: 1,800 m (5,905.31 ft)
- Digital Zoom: 1x, 2x, 4x, 8x
- Magnification: 2.41x
- Frame Rate: 50 Hz
- Display: 1920 × 1080, 0.49 inch, OLED
- Colour Palettes: 6 (White Hot, Black Hot, Iron Red, Alarm, Amber, Emerald)
- Storage: Built-in 64 GB
- 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 / 2 A
- Port: USB Type-C
- Operating Temperature: –30 °C to +55 °C (–22 °F to +131 °F)
- Protection Rating: IP67
- Product Dimensions: 194.3 mm × 54 mm × 65.4 mm (7.65″ × 2.13″ × 2.57″) (L × W × H)
- Net Weight: 421 g (0.93 lb)
- Slimline, ergonomic design for comfortable handling during longer observation sessions
- One-handed operation enabled by a simple three-button control layout
- AI-powered image calibration that continuously improves image quality across changing conditions
- Crystal-clear viewing experience designed to provide a sharp, comfortable image with reduced eye fatigue
- Quick-release battery system for fast and easy battery changes in the field
- Built-in video recording for capturing observations as they happen
- Snapshot function for saving still images instantly
- Built-in storage for keeping recorded footage and images directly on the device
- Wi-Fi hotspot connectivity for connecting the monocular to compatible devices
- Hot spot tracking to help quickly identify the hottest point in view
- Multiple colour palettes to tailor the viewing experience to different environments and preferences
- Flexible calibration modes to maintain image consistency in varying conditions
- Manual focus control for precise image adjustment
- Protective metal lens cover to guard against knocks, scratches, and dust
- Illuminated logo power button that indicates device status with adjustable brightness settings
- Stealth-friendly operation with the option to switch the illuminated logo off completely
- Pixfra signature styling with premium design details including embossed elements and carbon fibre accents
- Durable, field-ready construction built for dependable use outdoors
- Suitable for a wide range of uses including wildlife observation, conservation, and general thermal spotting
This product comes along with a neck strap and 1x battery.
NO OTHER ACCESSORIES INCLUDED.
- 12-Month OPW Warranty
Our aim is to ensure that your order arrives with you as soon as possible and in the safest, most cost-effective means.
Please Note: Shipping charges may be subject to additional surcharges if out of area or over weight restrictions.
Please Note: DPD SHIPMENTS REQUIRE THE CUSTOMER TO SHOW A PIN CODE ON DELIVERY - READ MORE: HERE
COURIERS
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We use DPD , RoyalMail, TNT and UPS courier services for all our orders whether dispatching to the UK or International. As soon as your order has been dispatched you will receive an email with your unique tracking number. We are unable to add delivery notes to your order regarding safe spaces or neighbour deliveries. If you require this service it can be arranged directly with the courier once the parcel is in their network.
IN-STORE ITEMS
These are items that we have in-stock and will be sent out for delivery as soon as possible. We aim to dispatch all orders within 1-2 working days, but during busy periods dispatch may be delayed by a day or so. If you would like to purchase the item in person then please call ahead to arrange an appointment: 01803 611 895.
PRE-ORDER ITEMS
These are usually items that are going to be out-of-stock for a number of weeks or are in short supply. By purchasing a Pre-Order Item you are in effect paying a deposit for your goods. As soon as the item is back in stock yours will be dispatched within 24 hours where possible. Please see individual product pages for current back-in-stock dates. In rare occasions, these dates can be changed by the manufacturers so we recommend staying in contact with Optics Warehouse depending on the product lead time.
INTERNATIONAL DELIVERY & TAXES
In addition to the above information If your delivery address is outside of the UK you may be subject to import duties and taxes, which are levied once a shipment reaches your country. Any such additional charges for customs clearance must be borne by you. You should note that customs policies vary widely from country to country. Optics Warehouse advises each customer to contact their local customs office for further information if they are in any way unsure of local duties or liabilities. Cross border shipments are subject to opening and inspection by customs authorities which means some packages may be opened and re-sealed.
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If you require any further assistance, please call us on 01803 611 895 or email sales@opticswarehouse.co.uk
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A NOTE ABOUT DPD SHIPMENTS:
- Please be advised that we have now introduced DPD Pins to all DPD orders from Optics Warehouse.
- If your shipment is being sent from Optics Warehouse via DPD you will be sent a Pin Code that must be shown to the courier upon delivery.
- The pincode is sent VIA email & TEXT message. A valid email address and mobile number must be provided at checkout. Emails will be sent from "Riviera House 3PL" - if you do not receive this email please check your junk or spam folders.
- Please note that if you do not display your pin code to the courier driver upon delivery, you will not be able to have your item and you may need to schedule another delivery date to show a valid pin.
- Please view the attached slides HERE for further information!