Guide TD411 LRF

The Guide TD411 LRF is a rugged and feature-rich thermal monocular equipped with a built-in laser rangefinder. It features a high-sensitivity 384 × 288 VOx sensor (12 µm pixel pitch, NETD ≤ 35 mK), delivering crisp, detailed imagery on a 0.23″ AMOLED display (640 × 400 pixels) at a smooth 50 Hz refresh rate.

With its 19 mm f/1.0 lens, the TD411 LRF offers a field of view of approximately 24 m × 18 m at 100 m. The optical magnification ranges from 1.4× to 5.6×, giving a detection range of around 1,000 m for human-sized targets. Its integrated laser rangefinder accurately measures distance up to 600 m.

About the Guide TD Gen2 LRF Series

The TD Gen2 LRF models are specially designed for users who need thermal imaging plus precise distance feedback. With long battery life, IP66-rated durability, Wi‑Fi connectivity, and intuitive controls, the TD411 LRF delivers reliable performance in handheld mode even under challenging conditions.

Key Features

• 384 × 288 VOx thermal sensor; 12 µm pixel pitch; NETD ≤ 35 mK
• Objective lens: 19 mm f/1.0
• Field of view at 100 m: approx. 24 m × 18 m
• Optical magnification: 1.4×–5.6×
• Detection range: up to 1,000 m
• Built-in laser rangefinder: up to 600 m (eye‑safe Class 1)
• Display: 0.23″ AMOLED, 640 × 400 resolution; 50 Hz refresh
• Color palettes: White Hot, Black Hot, Red Hot, Green Hot, Iron Red, Blue Hot, Sepia
• Eyepiece: 12 mm eye relief; diopter −4 to +2; digital zoom up to 18×
• Connectivity: Wi‑Fi (2.4 GHz), USB‑C interface for charging/data transfer
• Battery: single replaceable 18650 cell, approx. 10 hours runtime
• Housing: IP66-rated, shock- and dust-resistant
• Weight: approx. 383 g; Dimensions: 150 × 75 × 74 mm

About Guide Sensmart

Guide Sensmart is recognized worldwide as a provider of high-quality thermal imaging solutions. With over two decades of infrared R&D experience and distribution across more than 70 countries, Guide emphasizes durable, accessible thermal optics designed for practical field use.

What’s in the Box

• Guide TD411 LRF Thermal Monocular
• Lens cover and lanyard
• Wrist strap
• Protective carry bag and eye mask
• Battery charger and rechargeable 18650 battery
• USB‑C charging/data cable
• Quick use guide and warranty card

Warranty

The TD411 LRF comes with a 2-year manufacturer warranty, and service is available via Guide’s authorized international network.