Pulsar · Multispectral Binoculars · Hunting & Wildlife Observation
Pulsar Symbion LRF DXT50
Multispectral Binoculars with Laser Rangefinder
Four imaging systems in one device – thermal, 4K digital, fusion & integrated LRF up to 1’500 m, in an IP67-rated magnesium alloy housing
Four systems. One binocular. Total situational awareness.
The Pulsar Symbion LRF DXT50 is a multispectral binocular that integrates four independent imaging systems into a single, field-ready device: a high-resolution 1280×1024 thermal imager, a 4K digital daytime camera, a real-time spectral fusion mode, and an integrated 1’500 m laser rangefinder. At 2x base magnification – extendable to 16x (thermal) or 26x (digital) – the Symbion covers everything from wide-area scanning to precise long-range target identification. The dual 1920×1080 AMOLED displays deliver a sharp, high-contrast image across the full spectral operating range, whether under full daylight, deep twilight, or total darkness. Housed in a magnesium alloy chassis with IP67 protection and rated for operation from −25 °C to +50 °C, the Symbion LRF DXT50 is built for demanding professional and field use without compromise.
Thermal Imaging · 1280×1024 / 12 µm / sNETD <20 mK
Premium thermal resolution with ultra-fine temperature sensitivity
The Symbion LRF DXT50 is built around a 1280×1024 uncooled thermal detector with a 12 µm pixel pitch – a combination found in professional-grade thermal systems. The finer the pixel pitch at a given resolution, the more detail is resolved without increasing sensor size. With a system-level NETD (Noise-Equivalent Temperature Difference) of less than 20 mK, the sensor detects temperature contrasts as small as 0.02 °C between adjacent points in the scene. This translates directly into visible image detail: faint heat signatures from partially concealed game, a recently used vehicle track, or a person at distance with minimal thermal contrast against a warm background are all resolved clearly. The 50 Hz frame rate delivers smooth, motion-artefact-free video in real time. Combined with the F1.0 50 mm germanium objective, the thermal channel reaches a detection range of 2’300 m under standard atmospheric conditions, with a 17.5° field of view at base magnification.
4K digital channel and multispectral fusion – day and night in a single device
Alongside the thermal channel, the Symbion LRF DXT50 integrates a 4K CMOS sensor (3840×2160) with a dedicated 50 mm digital objective at F1.8. This channel provides full-colour, high-resolution imagery in daylight and low-light conditions with digital magnification from 6.5x to 26x and a 5.8° field of view. Where the thermal channel detects heat signatures through fog, smoke and vegetation, the digital channel supplies colour context, fine surface detail and human-readable information such as number plates or markings at distance. In multispectral fusion mode, both channels are overlaid in real time: the thermal signature is blended into the digital image, giving the observer simultaneous colour detail and heat-source identification without switching modes. A Picture-in-Picture (PIP) function allows both channels to be displayed simultaneously on the dual 1920×1080 AMOLED screens. Nine selectable thermal colour palettes – including White-Hot, Black-Hot, Red-Hot and Rainbow – optimise contrast for different terrain and lighting scenarios.
Integrated laser rangefinder and Stream Vision 2 connectivity
The built-in laser rangefinder operates at 905 nm and measures distances to 1’500 m with ±1 m accuracy. Range data is displayed directly in the field of view, enabling immediate tactical decisions without a separate ranging device. For documentation and remote monitoring, the Symbion LRF DXT50 includes integrated dual-band Wi-Fi (2.4/5 GHz) and Bluetooth, connecting seamlessly to the Pulsar Stream Vision 2 app on Android and iOS. Photo and video recording with audio is stored on 64 GB of onboard memory – enough for extended operations without offloading. USB-C external power (5V/9V) keeps the unit running indefinitely from a power bank in the field. Electronic image stabilisation compensates for hand tremor and movement at all magnification levels.
Magnesium alloy housing – IP67-rated for field use from −25 °C to +50 °C
The Symbion LRF DXT50 is housed in a precision-formed magnesium alloy chassis – a material that delivers the rigidity and impact resistance of metal at significantly lower weight than steel or aluminium. The IP67 rating means complete dust exclusion and withstands submersion in up to 1 metre of water for 30 minutes, providing robust waterproofing under heavy rain and field immersion scenarios. With a guaranteed operating range of −25 °C to +50 °C, the device functions reliably in alpine winter conditions and in hot, arid environments alike. A 1/4″ tripod socket enables stable mounting for extended observation sessions, and the dual APS5 battery system – with both packs included – provides up to 8 hours of continuous use.
Key features – Pulsar Symbion LRF DXT50
- 🌡️ 1280×1024 thermal sensor, 12 µm, sNETD <20 mK – highest resolution in the Pulsar lineup, 2,300 m detection range
- 📷 4K CMOS digital (3840×2160) + 50 mm F1.8 – sharp daytime image up to 26× digital zoom
- 🔀 Multispectral fusion technology – thermal and digital images overlaid in real time
- 📏 LRF up to 1,500 m (±1 m, 905 nm, Class 1) – distance displayed as viewfinder overlay
- 🔭 Zoom 2–16x (thermal) / 6.5–26x (digital) – overview to maximum detail in one device
- 🔋 Dual APS5 (included), up to 8 hours – hot-swappable, USB-C charging (5V/9V)
- 💧 IP67 (1 m / 30 min) – magnesium alloy body, operating range −25 °C to +50 °C
- 📱 Dual-band Wi-Fi (2.4/5 GHz) + Bluetooth – live streaming and remote control via Stream Vision 2 app
- 💾 64 GB internal storage – MP4 video with audio and JPG photos
- 🖥️ 2× AMOLED 1920×1080 – 9 thermal palettes, PIP display, EIS image stabilization
For whom is the Pulsar Symbion LRF DXT50 designed?
The Symbion LRF DXT50 is the instrument of choice for hunters who require identification capability by day and by night, professional wildlife observers, land managers operating across large areas, and security professionals who need a single device for detection, identification and ranging in any light condition. The integration of thermal, digital, fusion and LRF eliminates the need to carry separate instruments and reduces the time between detection and decision.
Technical Specifications – Pulsar Symbion LRF DXT50
| Model | Pulsar Symbion LRF DXT50 |
|---|---|
| Thermal sensor resolution | 1280×1024 px (uncooled) |
| Pixel pitch | 12 µm |
| System NETD (sNETD) | <20 mK |
| Frame rate | 50 Hz |
| Thermal objective | 50 mm / F1.0 (Germanium) |
| Thermal magnification | 2–16x (base 2x) |
| Thermal field of view | 17.5° (30.7 m at 100 m) |
| Detection range | 2’300 m |
| Digital sensor | 4K CMOS 3840×2160 |
| Digital objective | 50 mm / F1.8 |
| Digital magnification | 6.5–26x |
| Digital field of view | 5.8° (10.2 m at 100 m) |
| Display | Dual AMOLED 1920×1080 px |
| Eye relief | 13 mm |
| Diopter adjustment | −5 / +5 dpt |
| Thermal colour palettes | 9 (incl. White-Hot, Black-Hot, Red-Hot, Rainbow) |
| Laser rangefinder | Up to 1’500 m · ±1 m accuracy · 905 nm |
| IR illuminator | 850 nm (built-in) |
| Electronic image stabilisation | Yes |
| Picture-in-Picture (PIP) | Yes (dual-channel) |
| Video/photo recording | Yes (with audio) |
| Onboard memory | 64 GB |
| Wi-Fi | Dual-band 2.4/5 GHz |
| Bluetooth | Yes |
| Mobile app | Stream Vision 2 (Android & iOS) |
| Battery | 2× APS5 (included) |
| Battery life | Up to 8 hours |
| External power | USB-C (5V / 9V) |
| Housing | Magnesium alloy |
| Protection rating | IP67 |
| Operating temperature | −25 to +50 °C |
| Tripod mount | 1/4″ |
| Dimensions | 207×132×72.5 mm |
| Weight | 1’000 g |
| Warranty | 3-year manufacturer warranty (Pulsar) · 2-year statutory right to remedy (Switzerland) |
Package Contents – Pulsar Symbion LRF DXT50
- 🔭 Pulsar Symbion LRF DXT50 multispectral binoculars
- 🔋 2× APS5 battery pack (included)
- 🔌 Battery charger
- 🔌 USB-C cable
- 👜 Carrying case
- 🧵 Neck / shoulder strap
- 🧹 Lens cleaning cloth
- 📄 Quick start guide & instruction manual
Frequently Asked Questions – Pulsar Symbion LRF DXT50
What is a multispectral binocular and how does it differ from a standard thermal device?
A multispectral binocular combines multiple independent imaging technologies in a single housing. The Pulsar Symbion LRF DXT50 integrates four systems: a 1280×1024 thermal imager that detects infrared heat radiation regardless of visible light conditions, a 4K digital CMOS camera for full-colour daytime and low-light observation, a real-time fusion mode that overlays thermal signatures onto the digital image, and a built-in laser rangefinder. A standard thermal monocular or binocular provides only the thermal channel. The multispectral design eliminates the need to carry separate devices for different conditions – day, twilight and night are all covered by one instrument.
What does the 1280×1024 sensor resolution and sNETD <20 mK mean in practice?
Resolution determines how much spatial detail the thermal image contains: 1280×1024 pixels (approx. 1.3 megapixels) is the highest thermal resolution currently available in a binocular-format device. Combined with the 12 µm pixel pitch, it means more resolved detail at any given detection distance compared to lower-resolution sensors. System NETD (sNETD) <20 mK refers to the minimum temperature difference the complete optical-sensor system can reliably detect. At below 20 millikelvin, the Symbion detects temperature contrasts smaller than 0.02 °C – allowing it to distinguish warm game partially hidden behind vegetation, or a recently traversed trail that remains slightly warmer than the surrounding ground.
What is the detection range and how is it measured?
The detection range of 2’300 m is the distance at which the thermal channel can confirm the presence of a human-sized heat source under standard atmospheric conditions (Johnson criteria, detection = 1.5 cycles across target). At this distance, the observer can confirm «something is there» but not necessarily identify it. Recognition and identification distances are shorter: typically one-third and one-eighth of the detection range respectively. The 17.5° field of view at 2x base magnification enables wide-area search, while the zoom to 16x allows closer examination of detected targets.
How does the integrated laser rangefinder (LRF) work?
The built-in laser rangefinder emits a 905 nm near-infrared pulse towards the target and measures the time for the reflection to return. From this, the distance is calculated and displayed directly in the field of view. The LRF measures up to 1’500 m with ±1 m accuracy, removing the need for a separate rangefinder and allowing immediate, in-sight distance data for decision-making. Operation is single-button; the range reading updates in real time. The LRF functions across the full thermal and digital zoom range.
How does the multispectral fusion mode work?
In fusion mode, the Symbion LRF DXT50 processes both the thermal and digital channels simultaneously and overlays the thermal image onto the digital image in real time. The result is a colour-accurate image from the 4K digital sensor with heat sources highlighted in the selected thermal colour palette – for example, an orange or red highlight over an animal in an otherwise full-colour landscape scene. This allows the observer to place thermal detections in a naturalistic visual context without switching between modes. The Picture-in-Picture (PIP) function additionally allows both channels to be viewed side by side in a split display.
How long does the battery last and can I power the device externally?
The Symbion LRF DXT50 ships with two APS5 rechargeable battery packs, each providing up to 8 hours of operation under standard conditions. Battery life varies with temperature, display brightness and active functions. Both APS5 packs can be hot-swapped in the field without powering down the device. Additionally, the USB-C port (5V / 9V input) accepts external power from a power bank, enabling indefinite operation from a suitable portable power source during extended field use.
What does the Stream Vision 2 app enable?
Stream Vision 2 is Pulsar’s official companion app for Android and iOS, connected to the Symbion via dual-band Wi-Fi (2.4/5 GHz) or Bluetooth. Through the app, the user can view the live image stream on a smartphone or tablet, control device settings remotely, download recorded photos and videos from the 64 GB onboard storage, update firmware, and share footage directly from the field. The app also provides access to the Stream Vision community and cloud features for managing recordings.
What warranty applies to the Pulsar Symbion LRF DXT50 in Switzerland?
Pulsar provides a 3-year manufacturer warranty on the Symbion LRF DXT50, covering defects in materials and workmanship. In Switzerland, the statutory right to remedy of 2 years from the date of purchase applies independently of the manufacturer warranty. Swiss-Sale.ch is happy to assist with any warranty enquiries and can coordinate directly with the authorised Pulsar service channel.
