DNT Hound H325R Thermal Monocular
£899.00 £749.17 ex.vat
The Hound H325R is a compact, rugged thermal monocular combining high-sensitivity infrared imaging with a built-in laser rangefinder and ballistic calculator — perfect for precise target detection and distance measurement under any lighting or weather conditions. Its ergonomic, lightweight design ensures comfortable all-day handling whether you’re stalking game, conducting reconnaissance, or observing wildlife.
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Best prices available — contact us
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Free UK delivery £95+
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Finance options available
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UK-based retailer • Authorised dealer • Manufacturer-backed warranty
UK authorised dealer • Manufacturer-backed warranty
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Hound H325R Overview
The DNT Hound H325R is a professional-grade thermal imaging monocular engineered for users who require precision, reliability, and consistent performance in demanding field conditions. Designed for hunting, wildlife observation, security, and technical field operations, it delivers clear thermal imaging, accurate ranging, and rugged durability in a compact footprint.
Advanced Thermal Imaging Performance
At the core of the H325R is a 384×288 resolution, <18 mK thermal sensor paired with a 50 Hz refresh rate, ensuring smooth, high-clarity imaging even when tracking fast-moving targets. The 25 mm objective lens provides a balanced field of view for medium-range detection, while the Micro-OLED 1024×768 display delivers crisp contrast and detail in all lighting and environmental conditions. Multiple colour palettes—including White Hot, Black Hot, Red Hot, and Iron Hot—allow users to adapt to terrain and visibility challenges.
Integrated Laser Rangefinder & Ballistic Calculator
The built-in laser rangefinder accurately measures distances from 5 to 1,200 yards, providing essential data for precise shot placement and tactical decision-making. Combined with the onboard ballistic calculator, the H325R automatically determines holdover values based on user-defined ballistic profiles. This system reduces manual calculations, speeds up engagement times, and ensures improved consistency in the field.
Optimised for Field Use
Engineered to withstand demanding environments, the H325R is rated IP67 for dust and water protection. Its lightweight housing, ergonomic grip, and intuitive control layout enable efficient one-hand operation. Powered by a standard 18650 battery with approximately 5.5 hours of runtime, and compatible with USB-C external power sources, the device is well-suited for extended operations.
Connectivity & Recording
With 32 GB of internal storage, users can capture and store still images and video directly on the device. Built-in WiFi enables wireless streaming, file transfer, and remote viewing via the DNT mobile app—ideal for documentation, instructional use, or collaborative situational assessment.
Key Applications
Hunting & Wildlife Observation
Provides long-range detection, precise ranging, and reliable thermal contrast for spotting and tracking game.
Search and Rescue
Enables fast detection of heat signatures in complex terrain or low-visibility environments.
Security & Surveillance
Offers stable, high-contrast imaging for perimeter monitoring and tactical assessment.
Technical Field Operations
Suitable for land management, surveying, and other professional tasks requiring accurate heat detection and distance measurement.
| Specification | Detail |
|---|---|
| Sensor Resolution | 384 × 288 px |
| Thermal Sensitivity (NETD) | ≤ 18 mK @ 25 °C |
| Pixel Size | 12 µm |
| Frame Rate | 50 Hz |
| Objective Lens | 25 mm |
| Magnification | 2.5× optical, 2.5–10× digital |
| Display | 1024 × 768 Micro-OLED |
| Colour Palettes | White Hot, Black Hot, Red Hot, Iron Hot |
| Laser Rangefinder | 5 – 1200 yards |
| Ballistic Calculator | Integrated, profile-based |
| Internal Memory | 32 GB |
| Power Supply | Flat-top 18650 / USB-C external power |
| Battery Life | Approx. 5.5 hours |
| Ingress Protection | IP67 |
| Connectivity | WiFi / DNT App |
| Operating Temperature | –20 °C to +50 °C |
| Weight | 299 g (10.55 oz) |
| Brand | DNT Optics |
|---|---|
| Detection Range | 1300M |
| Resolution | 384×288 |
| Base Magnification | 2.5x |
| NETD MK | <18mk |
| Refresh Rate | 50Hz |
| Objective Lens | 25mm |
| Pixel Pitch | 12 Micron |
| LRF System | 1000M |
| Video Recording | Yes |
| WIFI | Yes |
| Model Series | DNT Hound |
| Manufacturer Model | Hound H325R |

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