Guide TU435S

• Ballistic Calculation via TargetIR APP: Connecting the scope to the companion app enables ballistic calculation alongside OTA firmware upgrades, giving the shooter a holdover reference without carrying a separate ballistic calculator.
• Shutterless Imaging Architecture: The 3.0 shutterless design keeps the view uninterrupted during normal use, avoiding the periodic image freeze of a shutter-based calibration cycle, while a shutter module is retained specifically for startup and for maintaining image quality under significant temperature swings.
• 400×300 Detector with 15 mK NETD: The 12 μm pixel pitch detector paired with a fast 35 mm, F0.9 lens delivers a low Noise Equivalent Temperature Difference of 15 mK, producing clean, low-noise thermal images for reliable target identification.
• IP68-Rated Housing with 6000J Shock Resistance: The scope is built to withstand sustained rifle recoil as well as wet, dusty, and rough field conditions, making it suitable for mounting on hard-recoiling hunting calibers.
• 128 GB Internal Storage: Photo and video capture with synchronized audio is stored directly on the device, giving ample onboard capacity for extended use in the field without frequent file transfers.

ABOUT THE TU 3.0 SERIES

The TU 3.0 Series is Guide's line of thermal imaging riflescopes, built around a shutterless imaging architecture, modular design, and AI-assisted image processing. The series is aimed at hunters, law enforcement, and other professional users who need a dependable thermal riflescope for night hunting, search and rescue, and personal security applications. It spans models built around a 400×300 detector paired with a 35 mm lens up to a 640×512 detector paired with a 50 mm lens, giving users a choice between a lighter, more compact riflescope and one built for longer detection range.

Scopes in the series share a common design approach: an uncooled VOx infrared detector with a fast F0.9 objective lens, processed through Guide's ApexVision imaging system, a centrally positioned focus wheel and zoom lever for fast one-handed adjustment, and a rugged, IP68-rated housing rated to 6000J of shock resistance, allowing the scope to withstand the recoil of hard-hitting hunting calibers as well as rough handling in the field.

Dual-band Wi-Fi (2.4 GHz/5 GHz) connects the scope to the TargetIR APP, which supports over-the-air firmware upgrades and ballistic calculation, giving the shooter a reference for holdover in addition to thermal observation. Photo and video recording with synchronized audio, seven selectable color palettes (White Hot, Black Hot, Red Hot, Green Hot, Iron Red, Blue Hot, and Sepia), and an operating range of -20°C to 50°C round out a feature set aimed at reliable, all-weather field use.

ABOUT THE MODEL (GUIDE TU435S)

The Guide TU435S is the more compact model in the TU 3.0 lineup, built around a 400×300 uncooled VOx infrared detector with a 12 μm pixel pitch and a 15 mK NETD rating, paired with a fast 35 mm, F0.9 objective lens. This combination gives a 7.4° × 4.4° field of view (13×8 m at 100 m) and a 4.4x–17.6x magnification range, with a detection range of 1800 m / 1950 yd, keeping the scope lighter than the 640×512, 50 mm-lens TU650S while still offering a substantial detection range for night hunting.

The scope uses Guide's 3.0 shutterless imaging architecture, which keeps the sight picture uninterrupted during normal shooting rather than freezing periodically for shutter-based calibration; a shutter module is retained specifically to preserve image quality at startup and during significant temperature changes. A 48 mm eye relief and -5 to +5 diopter adjustment allow the scope to be set up safely behind hard-recoiling rifles while still giving a clear, correctly focused sight picture, and the standard 30 mm tube diameter is compatible with commonly available scope rings and mounts; a quick-release scope mount and eye mask are included.

Images are shown on a 0.49" AMOLED display with 1920×1080 resolution, with seven selectable color palettes (White Hot, Black Hot, Red Hot, Green Hot, Iron Red, Blue Hot, and Sepia) and manual focus for precise adjustment at different distances. Photo and video capture with synchronized audio is backed by 128 GB of internal storage, and dual-band Wi-Fi (2.4 GHz/5 GHz) connects the scope to the TargetIR APP for OTA firmware upgrades and ballistic calculation, while a built-in microphone and Bluetooth support additional connectivity.

Power comes from a built-in 18500 battery combined with an external, replaceable 18650 battery, together providing up to 8 hours of operating time. Weighing 738 g and measuring 374×89×76 mm, the IP68-rated housing with 6000J shock resistance and an operating range of -20°C to 50°C make the TU435S a dependable, rugged thermal riflescope for hunters who want strong optical performance without stepping up to a larger, heavier 50 mm-lens model.

ABOUT GUIDE

Guide (Guide Sensmart Tech Co.) is a Chinese manufacturer specializing in infrared and thermal imaging technology, operating as a subsidiary of Wuhan Guide Infrared Co. Founded in 2016, the company focuses on the design and production of commercial infrared sensors and thermal imaging devices. More information about the manufacturer is available on the Guide brand page.

Guide's product range spans thermal monoculars, thermal binoculars, digital night vision devices, thermal imaging riflescopes, and thermal clip-on attachments developed for hunting, outdoor observation, search and rescue, and security applications. The company applies its own infrared detector and imaging processing technology across its product lines, aiming to make thermal imaging accessible to a broad range of outdoor and professional users.

MAIN FEATURES

• Core Technology: ApexVision S1 system architecture (ApexCore S1 detector + Platform Nexus 1.0 + Algorithm Hyper-Light 2.0)
• Sensor Type: Uncooled VOx Infrared Detector, 8–14 μm
• Resolution: 400×300 px
• Pixel Pitch: 12 μm
• NETD: 15 mK
• Frame Rate: 50 Hz
• Objective Lens: 35 mm, F0.9
• Magnification: 4.4x–17.6x
• Field of View: 7.4° × 4.4°
• Field of View at 100 m: 13 × 8 m
• Detection Range: 1800 m / 1950 yd
• Focus: Manual
• Display: 0.49" AMOLED, 1920×1080 px
• Color Palettes: White Hot, Black Hot, Red Hot, Green Hot, Iron Red, Blue Hot, Sepia
• Eye Relief: 48 mm
• Diopter Adjustment: -5 to +5
• Digital Zoom: 14x
• Tube Diameter: Standard 30 mm
• Wi-Fi: 2.4 GHz / 5 GHz
• Interface: USB-C (Charge/USB 2.0)
• Additional Connectivity: Microphone, Bluetooth
• Recording: Photo/Video with audio
• Internal Storage: 128 GB
• Battery: 18500 battery (built-in) + 18650 battery (external, replaceable), up to 8 hours
• Operating Temperature: -20°C to 50°C
• Shock Resistance: 6000 J
• Waterproof Rating: IP68
• Weight: 738 g
• Dimensions: 374 × 89 × 76 mm

WARRANTY

The Guide TU435S thermal imaging riflescope is covered by a 3-year warranty.

IN THE BOX

• Guide TU435S Thermal Imaging Riflescope
• Eye Mask
• Quick-Release Scope Mount
• Carry Bag
• Lint-Free Cloth
• Battery Charger
• 18650 Battery ×2
• 5V 2A Adapter (US, UK, Australia, and Europe)
• USB-A to USB-C Cable
• Quick Start Guide
• Warranty Card