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SKU#EX-DEMO-GUI-TK431 Guide IR
Ex-Demo Guide TK431 35mm Lens 400x300 Sensor Thermal Imaging Monocular
Was
£699.99
1 in stock
- 400 × 300 VOx ceramic sensor with 17 µm pixel pitch and ≤30 mK NETD sensitivity.
- 35 mm f/1.2 lens with 2.3× optical magnification and up to 8× digital zoom.
- 0.4″ FLCOS display with 1280 × 960 resolution and smooth 50 Hz refresh rate.
- Image and video recording with Wi-Fi streaming for app-based viewing and sharing.
- Advanced features: Picture-in-Picture, scene modes, laser indicator, and illuminator.
- Rugged IP66 housing, fogproof and waterproof, with up to 5 hours runtime.
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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 USB Cables, Neoprene Cover Wall Plug and Adapters, Wrist Strap, Neck Strap and User Manual.
NO OTHER ACCESSORIES INCLUDED.
The Guide TK431 Thermal Imaging Monocular is a compact and versatile handheld thermal imager designed for outdoor observation, wildlife monitoring, and security applications. It features a highly sensitive 400 × 300 VOx ceramic thermal sensor with a 17 µm pixel pitch and ≤30 mK NETD, ensuring clear, detailed imaging even in challenging weather or low-contrast environments.
With its 35 mm f/1.2 objective lens and 2.3× optical magnification, the TK431 provides sharp mid-range observation, complemented by up to 8× digital zoom for close inspection. The wide field of view, approximately 19 m × 14 m at 100 m, makes it well-suited for scanning large areas, while the 0.4″ FLCOS display (1280 × 960 resolution, 50 Hz refresh) ensures smooth, high-definition visuals.
Practical features such as image and video recording, Wi-Fi streaming, Picture-in-Picture, scene modes, and multiple colour palettes enhance its adaptability in the field. Rugged and reliable, the TK431 is IP66-rated, shockproof, fogproof, and waterproof, with dual 18650 batteries delivering up to 5 hours of continuous use.
- Model Guide TK431
- Thermal Sensor Type VOx Ceramic
- Thermal Sensor Resolution 400×300
- Pixel Pitch 17 µm
- Thermal Sensor Pixel Count 0.12 MP
- NETD ≤30 mK
- Refresh Rate 50 Hz
- Calibration Mode Automatic, Scene, Shutter
- Lens Diameter 35 mm
- Lens Aperture f/1.2
- Optical Magnification 2.3×
- Digital Zoom Up to 8×
- Dioptre Range −4 to +2 dpt
- Field of View (degrees) 11.1°
- Field of View (1000 m) 193 m
- Field of View at 100 m ~19 m × 14 m
- Display Type FLCOS
- Display Resolution 1280×960
- Display Pixel Count 1.20 MP
- Image Capture Yes
- Video Recording Yes
- Video Output Yes
- Connectivity Wi-Fi
- Special Features Picture-in-Picture, Scene modes, Laser indicator & illuminator, Colour palettes (Black Hot, White Hot, Red Hot, Iron Hot, Blue Hot, Green Hot)
- Protection Rating IP66, Fogproof, Waterproof, Shockproof
- Auto Power-Off Yes
- Tripod Adaptable Yes
- Length 192 mm
- Width 65 mm
- Height 71 mm
- Weight ~485 g
- Material Plastic
- Operating Temperature −10 °C to +50 °C
- Power Supply Dual 18650 batteries
- Battery Life Up to 5 hours
- Colour Black
- High-Performance Sensor: The 400 × 300 VOx ceramic detector with 17 µm pixel pitch and ≤30 mK NETD delivers crisp thermal imaging in a wide range of environments.
- Clear Optics: The 35 mm f/1.2 lens and 2.3× optical magnification provide sharp detail, while digital zoom (up to 8×) enables closer inspection of distant objects.
- Wide Field of View: At 100 m, the TK431 covers approximately 19 m × 14 m, making it suitable for scanning and tracking movement over large areas.
- Smooth Visuals: A 0.4″ FLCOS display with 1280 × 960 resolution and 50 Hz refresh offers clear and fluid viewing with fine detail.
- Versatile Functionality: Features include Picture-in-Picture mode, scene-specific presets, multiple colour palettes, and built-in laser indicator/illuminator for enhanced target identification.
- Recording & Sharing: Capture photos and videos directly, with Wi-Fi streaming for real-time app viewing and convenient data sharing.
- Built for the Outdoors: Rugged IP66-rated body, fogproof, waterproof, and shockproof construction ensure dependable performance in tough conditions.
- Efficient Power: Powered by dual 18650 batteries, the TK431 delivers up to 5 hours of operation, with automatic power-off for energy saving.
This product comes in its original box with the USB Cables, Neoprene Cover Wall Plug and Adapters, Wrist Strap, Neck Strap and User Manual.
NO OTHER ACCESSORIES INCLUDED.
- 1 Year Optics Warehouse 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
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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