Introducing the Pulsar Merger LRF XL50 Thermal Imaging Binoculars, the first in its class to offer exceptional thermal clarity across the entire magnification range. Equipped with a 1024×768, 12µm, <40mK thermal sensor and a powerful 50mm f1.0 objective lens, these binoculars deliver stunning thermal imagery and a detection range of up to 2300 meters, making them the ideal solution for long-range detection and precision in the field.
Exceptional Thermal Optics for Long-Range Detection
The Merger LRF XL50 is the pinnacle of thermal imaging binoculars, incorporating an industry-leading 1024×768, 12µm, <40mK NETD thermal sensor. Paired with a fast 50mm f1.0 objective lens, it offers a superior detection range of up to 2300m. This combination ensures crystal-clear images with outstanding detail, even at great distances, regardless of the magnification level.
High-Quality Thermal Imagery Across All Magnifications
With a 2.5x-20.0x magnification range, the Merger LRF XL50 retains high-quality thermal imagery and excellent object recognition at all zoom levels. The smooth digital zoom allows you to adjust the magnification in 2x steps or continuously, giving you full control over the field of view for any situation.
Integrated Precision Laser Rangefinder
The built-in precision laser rangefinder offers accurate distance measurements up to 1000 meters with an accuracy of ±1 meter. Whether you're using single measurement or continuous scanning modes, the laser rangefinder ensures quick and reliable distance assessments, aiding in crucial decision-making during observation.
Advanced Sensitivity and Image Clarity
With three sensitivity amplification levels and advanced filtration algorithms, the Merger LRF XL50 excels in long-range detection, even in adverse weather conditions like rain or fog. These settings allow you to define an animal’s anatomical features clearly and ensure sharp rendering of objects and background in the field of view.
Classic Binocular Design with Modern Thermal Imaging
The Merger LRF XL50 maintains the classic design of daytime binoculars while delivering the most advanced thermal imaging capabilities. Ergonomically designed, it fits comfortably in the hand for extended observation sessions. Six function buttons are strategically placed for easy access, allowing you to control frequently used functions with a single touch.
Comfortable Two-Eye Viewing
For long-term viewing comfort, the Merger LRF XL50 features an adjustable interpupillary distance of 62-74mm, providing a customized fit for the user. Viewing through two visual channels reduces eye strain, enhances detection of small or faint objects, and improves performance in low-contrast scenarios compared to single-channel thermal monoculars.
8 Color Palettes for Optimized Thermal Viewing
Choose from eight color palettes to tailor your thermal viewing experience to the task at hand. White Hot, Black Hot, and Red Hot are perfect for quick object detection, while Rainbow and Ultramarine enhance recognition and identification. For long nighttime observation, Sepia, Red Monochrome, and Violet provide optimized viewing comfort and clarity.
Calibration Modes for Consistent Image Quality
The Merger LRF XL50 offers three calibration modes (Manual, Semi-Automatic, and Automatic) that equalize the microbolometer temperature background, eliminating image defects and ensuring consistently clear, high-quality thermal imagery.
Extended Battery Life with Dual Battery System
Powered by a dual battery system, the Merger LRF XL50 includes one built-in 4 Ah battery and a replaceable 3.2 Ah battery, providing up to 8 hours of continuous operation on a single charge. The replaceable battery features an embossed design for easy positioning, allowing for quick swaps even in total darkness.
Instant Start-Up and Display Off Mode
For power-conscious users, the Display Off mode temporarily reduces screen brightness while keeping the rest of the system operational. When needed, the binoculars can restart in just 3 seconds for instant observation.
Rugged, Durable Design for Harsh Conditions
The Merger LRF XL50 is built to withstand tough environments, with a magnesium alloy housing that ensures durability while keeping the device lightweight. The housing protects internal components from shocks, drops, moisture, and extreme temperatures. Additionally, the metal shell acts as a heat sink, maintaining optimal performance during extended use.
IPX7 Waterproof Rating
The IPX7 waterproof rating provides protection against heavy rain, snow, and high humidity. The binoculars can also withstand submersion in up to 1 meter of water for up to 30 minutes, ensuring reliable operation in any weather condition.
Wide Operating Temperature Range
Designed to perform flawlessly in extreme temperatures, the Merger LRF XL50 remains fully operational in conditions ranging from -25°C to +50°C, making it perfect for use in harsh environments.
Built-In Video Recorder and Wi-Fi Connectivity
Capture and store your most memorable moments with the built-in video and still image recorder. The Merger LRF XL50 features 16GB of internal memory, allowing for hours of video footage and thousands of photos. Easily transfer files via USB-C or wirelessly through the Stream Vision 2 app, which also offers 16GB of free cloud storage for secure backups and sharing.
Stream Vision 2 Compatibility
Connect to your smartphone or tablet via the built-in Wi-Fi module, which supports both 2.4GHz and 5GHz frequencies for better bandwidth and faster data transfer. The Stream Vision 2 app allows you to control the device remotely, browse and share captured content, and update firmware for optimal performance.
Key Features of the Pulsar Merger LRF XL50:
1024×768, 12µm, <40mK NETD thermal sensor for superior thermal clarity
2300m detection range for long-distance observation
2.5x-20.0x magnification with smooth digital zoom
Precision laser rangefinder with a 1000m range and ±1m accuracy
Three sensitivity amplification levels for enhanced detection in adverse conditions
Eight color palettes for task-specific thermal imaging
Dual battery system for up to 8 hours of continuous use
Built-in video recorder with 16GB internal memory and 16GB cloud storage via Stream Vision 2
IPX7 waterproof rating and reliable performance in -25°C to +50°C temperatures
Magnesium alloy housing for durability and lightweight handling
Instant start-up and Display Off mode for power-efficient operation
The Pulsar Merger LRF XL50 Thermal Imaging Binoculars offer the ultimate combination of thermal clarity, long-range detection, and ergonomic design. Whether you're scanning vast landscapes or focusing on distant objects, these binoculars deliver unmatched performance, precision, and comfort for professionals and outdoor enthusiasts alike.
Shipping Options
Fast & Reliable UK Delivery
We offer flexible delivery options across the UK, with free shipping available on qualifying orders.
FREE Next Working Day Delivery (Mon–Fri) On all orders £300 and over
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Express Delivery – £3.99 On orders under £49.99
Standard Delivery (2–4 Working Days) – £2.99 A great value option for smaller orders
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Order Fulfilment
Some items, as clearly stated on the product page, may be fulfilled directly by our partners or manufacturers. In these cases, your order will be shipped to you straight from the brand’s warehouse. This helps us provide a wider range of specialist equipment and may result in slightly different delivery times.
Returns Policy
If something isn’t right, we’ll always try to help.
Unused items in “as new” condition can usually be returned within the statutory cooling-off period
Please contact us before sending anything back so we can advise on the safest way
For unwanted items, return shipping is your responsibility, and original shipping may be deducted where applicable
If a product is faulty or damaged, we’ll arrange repair, replacement or refund in line with your consumer rights — and we’ll cover reasonable return costs
Telescope shipping is expensive, and specialist — avoidable returns really do impact our business, so we always encourage customers to ask questions before buying. We’re here to help you get it right first time.
Your statutory rights are not affected.
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Pulsar Merger LRF XL50 Thermal Imaging Binoculars
£5,329.95
Frequently Asked Questions
Our FAQ section covers key information about warranties, shipping, returns, and store opening hours. Find details on manufacturer warranty cover, UK delivery options, how to return an item, and when our team is available to help.
Does it come with a warranty?
All our products are UK stock so come with manufacturers warranty
What happens if I don't like it?
We always want you to be happy with your purchase — so if you’re unsure, please ask us first. We’re always happy to give honest advice before you buy.
If the product arrives and you simply decide it isn’t for you, you can usually return it within the cooling-off period — as long as it’s unused, in perfect condition, and returned with all original packaging and accessories.
Because telescopes and optical equipment are large, delicate and expensive to ship, you’ll need to cover the cost of sending it back, and if we originally subsidised delivery, we may deduct our outbound shipping costs from your refund.
We’re a small specialist business, and unnecessary returns genuinely hurt us — so if you’re unsure at all, please talk to us first. We’d rather help you choose the right item than process a return.
How fast is shipping?
We aim to ship in-stock items as quickly as possible.
Most in-stock orders dispatch within 1–2 working days
Delivery usually takes 1–3 working days after dispatch (UK mainland)
Heavier / oversized items and special orders may take a little longer
You’ll receive tracking details as soon as your order is on its way.
Astronomy equipment often requires specialist packing and trusted couriers — we do this to keep your gear safe, not to slow things down. If you need something urgently, just ask and we’ll do our best.
What's the returns policy?
If something isn’t right, we’ll always try to help.
Unused items in “as new” condition can usually be returned within the statutory cooling-off period
Please contact us before sending anything back so we can advise on the safest way
For unwanted items, return shipping is your responsibility, and original shipping may be deducted where applicable
If a product is faulty or damaged, we’ll arrange repair, replacement or refund in line with your consumer rights — and we’ll cover reasonable return costs
Telescope shipping is expensive, and specialist — avoidable returns really do impact our business, so we always encourage customers to ask questions before buying. We’re here to help you get it right first time.