Guide TU435L 3.0 Thermal Riflescope with LRF

The Guide TU435L 3.0 brings an integrated 1,500-meter laser rangefinder and ballistic calculator. Built on the shutterless 3.0 platform, the TU435L pairs a 400 × 300 thermal sensor with a 35mm F1.0 lens, 128 GB of storage, and over 7 hours of battery life in a lightweight 780-gram package.

Key Features

• 400 × 300 thermal sensor, 12 μm pixel pitch — 120,000 thermal pixels with ≤20 mK NETD deliver clean, usable imagery in complete darkness and through smoke, with a thermal detection range of 1,800 meters. Shutterless 3.0 calibration keeps the display live at 50 Hz, with no freeze frames during routine recalibration (a shutter still works at startup and during large temperature changes).

• 35mm F1.0 objective lens — a fast, light-gathering objective with a 7.4° × 4.4° field of view.

• 1,500 m laser rangefinder with ballistic calculator — range targets and get holdover corrections calculated on-screen. Ballistic profiles are loaded via the TargetIR Ballistics app.

• 1920 × 1080 AMOLED display — a crisp, high-contrast eyepiece display that renders thermal imagery with clean detail across the full 4.4x–17.6x magnification range.

• Recoil-activated recording — each shot automatically captures a 15-second video clip and 5 still photos, stored on 128 GB of internal memory. Playback lets you review shots.

• Built-in and external batteries — an 18500 cell inside the body works with an 18650 in the external compartment, and the pair is rated at more than 7 hours at 25 °C (77 °F). Spare 18650 cells are a common size.

• IP68 / 6,000J shock rating — fully sealed against dust and submersion, and rated for recoil up to .300 Win Mag. Built to perform in extreme cold (−4°F) through desert heat (122°F).

Comparing models? See where the TU435L fits in the full Guide Sensmart thermal range, or browse our other thermal riflescopes.

Ideal For

Hunters who need integrated LRF — a built-in laser rangefinder and ballistic calculator eliminate the need to carry and operate a separate ranging device.

Hog and predator hunters working at moderate distances who want thermal detection and range-to-target data in a single optic.

First-time thermal scope buyers who want a modern, full-featured scope with the Guide 3.0 platform (shutterless calibration, recoil-activated recording, TargetIR app integration and IP68 durability).

Weight-conscious hunters who want LRF capability in a compact package. At 780 grams, the TU435L is the lightest of Guide's TU LRF 3.0 scopes.