Guide TJ420

The Guide TJ420 is a feature-rich thermal monocular designed for advanced users who demand premium image clarity, smart connectivity, and long operational runtime. It features a 400×300 VOx sensor with 12 μm pixel pitch and an ultra-sensitive NETD of ≤25 mK, providing superior contrast in challenging thermal environments.

Equipped with a 25 mm f/1.0 lens, the TJ420 offers a wide field of view of 19 m × 14 m at 100 m and a magnification range from 3.04× to 12.16×. Its high-definition 0.39" AMOLED display with 1920×1080 resolution ensures exceptional visual detail, even at full digital zoom. The device is also equipped with audio recording, Bluetooth, Wi‑Fi (2.4 G & 5 G), and smart sensors including a compass and gyroscope.

About the Guide TJ Series

The TJ series represents Guide's high-end thermal monocular line, combining professional-grade detection performance with intelligent features for seamless integration in the field. With support for photo/video/audio recording, customizable palettes, and a rugged IP67-rated body, the TJ devices are ideal for users who value image quality, functionality, and durability.

Key Features

• 400×300 VOx sensor, 12 μm pixel pitch, NETD ≤ 25 mK
• 25 mm f/1.0 objective lens with manual focus
• Field of view at 100 m: approx. 19 m × 14 m
• Magnification: 3.04× optical, up to 12.16× digital
• Detection range: up to 1,300 m
• Display: 0.39″ AMOLED with 1920×1080 resolution
• Color palettes: White Hot, Black Hot, Red Hot, Green Hot, Iron Red, Blue Hot, Sepia
• Smart sensors: Compass, gyroscope, microphone
• Audio & video recording with 32 GB internal memory
• Wi‑Fi 2.4 G/5 G, USB‑C, and Bluetooth connectivity
• Battery: 2× replaceable 18650 batteries, up to 12 h runtime
• Durability: IP67 rated; operating temp −20 °C to +50 °C
• Weight: 479 g; Dimensions: 234 × 66 × 66 mm

About Guide Sensmart

Guide Sensmart is a global thermal imaging specialist, delivering reliable and innovative optics solutions across more than 70 countries. With decades of expertise in infrared technologies, Guide continues to lead the field in rugged, high-performance thermal devices for outdoor use.

What’s in the Box

• Guide TJ420 Thermal Monocular
• 2× 18650 Rechargeable Batteries
• Battery Charger
• 5V/2A Power Adapter (US, EU, UK, AU)
• USB Type-C Cable
• Wrist Strap
• Quick Start Guide & Warranty Card

Warranty

The Guide TJ420 is covered by a 2-year manufacturer warranty and is supported through an extensive global service network, ensuring reliability and fast support when you need it.