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We aim to dispatch in-stock items same working day if ordered before 2.30pm, but during busy periods we may dispatch in-stock items within 1-2 working days.
SKU#EX-DEMO-GUI-TD431 Guide IR
Ex-Demo Guide TD431 LRF 35mm Lens 384x288 Thermal Imaging Monocular
Was
£699.99
1 in stock
- 384×288 VOx thermal sensor with 12 μm pixel pitch and ≤35 mK NETD sensitivity.
- 35 mm f/1.0 manual-focus lens with detection range up to 1,800 m (human-sized targets).
- Variable magnification from 2.6× to 10.4× for scanning and detailed observation.
- Built-in laser rangefinder with 600 m measuring range for accurate distance assessment.
- 0.23″ AMOLED display with 640×400 resolution and 50 Hz refresh rate.
- Lightweight (393 g), IP66-rated housing with up to 10 hours of operation per battery.
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PRICE MATCHSeen it Cheaper? We Could Match It!
EXCHANGE GUARANTEE60 day Scope Out Guarantee
KLARNA AVAILABLEOn All Our Products
TRADE IN & PART EXWe'll take your old Optics
We aim to dispatch in-stock items same working day if ordered before 2.30pm, but during busy periods we may dispatch in-stock items within 1-2 working days.
Product Information
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DESCRIPTION
PLEASE NOTE: The images for this product has been taken from the original listing and therefore may vary slightly for the pictures shown (eg; light or small scratches and scuffs)
Condition: Good
This product comes in its original box with the neoprene case, Battery, Battery Charger, USB cable and user manual.
NO OTHER ACCESSORIES INCLUDED.
The Guide TD431 LRF Thermal Imaging Monocular is a powerful observation tool that combines long-range thermal detection with precise distance measurement. Featuring a sensitive 384×288 VOx uncooled thermal sensor with a 12 μm pixel pitch and ≤35 mK NETD, paired with a bright 35 mm f/1.0 lens, it provides sharp and detailed imagery even in challenging conditions.
With a detection range of up to 1,800 m (human-sized targets) and an integrated laser rangefinder accurate to 600 m, the TD431 LRF is perfectly suited for hunting, wildlife observation, and tactical applications. Its 0.23″ AMOLED display with 640×400 resolution and smooth 50 Hz refresh ensures comfortable, fluid viewing, while variable magnification from 2.6× to 10.4× allows both wide scanning and focused observation.
Compact, lightweight, and rugged with IP66-rated protection, the TD431 LRF is built for real-world field use. With wireless connectivity, intuitive operation, and up to 10 hours of runtime from a replaceable 18650 battery, it is a reliable companion for extended outdoor missions.
- Model Guide TD431 LRF
- Thermal Sensor Type VOx Uncooled
- Thermal Sensor Resolution 384×288
- Pixel Pitch 12 μm
- Thermal Sensor Pixel Count 0.11 MP
- NETD ≤35 mK
- Refresh Rate 50 Hz
- Lens Diameter 35 mm
- Lens Aperture f/1.0
- Magnification (Optical) 2.6× – 10.4×
- Dioptre Range −4 to +2 dpt
- Field of View (degrees) 7.5°
- Field of View (1000 m) 130.8 m
- Field of View at 100 m ~13 m × 10 m
- Detection Range 1,800 m (human-sized targets)
- Display Type AMOLED
- Display Resolution 640×400
- Image Capture No
- Video Recording No
- Video Output No
- Rangefinder Max Range 600 m
- Measurement Units Metres, Yards
- Measurement Display Internal display
- Length 150 mm
- Width 77 mm
- Height 74 mm
- Weight 393 g
- Material Plastic
- Power Supply Replaceable 18650 battery
- Battery Life Up to 10 hours
- Colour Black
- Protection Rating IP66
- High-Sensitivity Thermal Sensor: Equipped with a 384×288 VOx uncooled detector, 12 μm pixel pitch, and ≤35 mK NETD, the TD431 LRF delivers sharp thermal images with excellent contrast.
- Long-Range Capability: Detects human-sized targets at up to 1,800 m, with a built-in laser rangefinder providing precise measurements out to 600 m.
- Bright Optics: The 35 mm f/1.0 lens enhances light collection for clear imaging, while manual focusing ensures flexibility for varying distances.
- Smooth Display: The 0.23″ AMOLED screen with 640×400 resolution and 50 Hz refresh rate presents detailed thermal imagery with minimal motion blur.
- Customisable Viewing: Multiple colour palettes (White Hot, Black Hot, Red Hot, Green Hot, Iron Red, Blue Hot, Sepia) allow users to adapt the image output to different conditions and preferences.
- Built for the Field: Compact and weighing only 393 g, the TD431 LRF is IP66-rated for water and dust resistance, operates for up to 10 hours on a single 18650 battery, and includes Wi-Fi and USB-C connectivity for flexible data handling.
This product comes in its original box with the neoprene case, Battery, Battery Charger, USB cable and user manual.
NO OTHER ACCESSORIES INCLUDED.
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
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.
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.
NEED HELP?
If you require any further assistance, please call us on 01803 611 895 or email sales@opticswarehouse.co.uk
-
A NOTE ABOUT DPD SHIPMENTS:
ASK A QUESTION
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
 |
 |
 |
 |
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.
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.
NEED HELP?
If you require any further assistance, please call us on 01803 611 895 or email sales@opticswarehouse.co.uk
-
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!
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