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The Guide TD635LS Thermal Monocular has been upgraded with the latest ApexVision technology from Guide Sensmart. Equipped with a highly sensitive 640 × 512 @12μm thermal detector with an impressive NETD of <15mK, it provides clear thermal imagery and enhanced target detection in challenging weather and low-visibility conditions.
Featuring an integrated 1200m laser rangefinder, the TD635LS allows users to accurately measure distances while maintaining a lightweight and ergonomic design. The intuitive focusing roller enables smooth one-handed operation, while the symmetrical housing ensures comfortable use with either hand.
Combining advanced thermal performance, long battery life, laser rangefinding capability, and a compact form factor, the Guide TD635LS LRF is an ideal solution for wildlife observation, pest control, search and rescue, security applications, and general outdoor exploration.
🗸 COMPLETE APEXVISION S1 SYSTEM ARCHITECTURE
The TD635LS is powered by Guide’s next-generation thermal imaging solution. ApexVision redefines the infrared core of outdoor optics from the ground up – engineered for any condition, it delivers ultra-clear visuals with smooth, ghost-free motion, high-fidelity imaging and razor-sharp detail at long range.
🗸 HIGHLY-SENSITIVE <15MK NETD
The Guide TD635LS feautres an ultra-sensitive ≤15mK NETD thermal sensor that delivers exceptional image clarity and enhanced target recognition, revealing finer details even in challenging weather and low thermal contrast conditions.
🗸 BUILT-IN 1200M LASER RANGEFINDER
The integrated 1200m laser rangefinder provides fast and accurate distance measurements, seamlessly built into the compact housing for enhanced portability and field performance.
🗸 EXTENDED BATTERY LIFE
During observation, exploration and stalking in the field, the Guide TD635LS offers an impressive 12-hour runtime. The replaceable 18650 battery supports blind installation in the dark, with no need to distinguish between the positive and negative terminals.
| Core Technology | ApexVision AI System Architecture, Detector ApexAim 5.0, Performa Max 2.0, Hyper-Light 2.0 |
| Type | Uncooled VOx Infrared Detector, 8–14μm |
| Resolution | 640×512 @ 12μm |
| NETD | ≤15mK |
| Frame Rate | 50Hz |
| Objective Lens | 35mm F1.0 |
| Field of View | 12.5° × 9.4° |
| FOV @ 100m | 22m |
| Magnification | 2.0× – 16.4× |
| Detection Range | 1800m / 1950yd |
| Focus | Manual |
| Display Type | 0.36″ AMOLED 1280×960 |
| Colour Palettes | White Hot, Black Hot, Red Hot, Green Hot, Iron Red, Blue Hot, Sepia |
| Eyepiece | Eye Relief 20mm, Diopter -6D to +6D, Zoom Ring |
| Laser Rangefinder | 1200m / 1300yd |
| WiFi | 2.4G, 5G |
| Interface | USB-C, Power Supply, USB 2.0 |
| Other | Microphone, Bluetooth |
| Recording Function | Photo / Video (Audio Recording Included) |
| Memory Capacity | 32GB |
| Battery Type | Single Replaceable 18650 Battery |
| Operating Time | 10 Hours |
| Operating Temperature | -20°C to +50°C |
| Protection Rating | IP67 |
| Weight | 370g |
| Dimensions | 176.5 × 64.7 × 72.2mm |
| Included | Device, Carry Bag, Hand Strap, Neck Strap, Eye Cup, Battery Charger, USB-C Cable, Quick Start Guide, Warranty Card |
| Optional | Bluetooth Remote Control, 18650 Battery |



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