The Guide TE421 Thermal Monocular is designed for adventurers, hunters, and professionals who need a portable yet powerful thermal imaging solution. Weighing just 295g, this lightweight Guide thermal monocular combines precision, clarity, and endurance, offering exceptional performance and features that make it one of the best value thermal monoculars for outdoor use.

Equipped with a high-sensitivity 400×300 @ 12 μm infrared sensor and a 25 mm lens, the Guide TE421 thermal imaging monocular delivers crisp, detailed thermal visuals even in total darkness, fog, or harsh weather. The monocular has a strong detection range with up to 1,300 m for a 1.7m target, while the wide 11° x 8.2° field of view provides excellent situational awareness. This makes the TE421 a reliable companion for hunting, wildlife observation, or nighttime inspections.

Designed for convenience in the field, the TE421 features a rapid-charge system that delivers one hour of continuous use from just a 10-minute charge. Wi-Fi connectivity and mobile app control allow you to stream, record, and share footage effortlessly. IP67-rated, the rugged Guide TE421 thermal monocular withstands rain, dust, and tough outdoor conditions, giving you dependable performance wherever your adventures take you.

Key Features

• High-Sensitivity Imaging: 400×300 @ 12 μm thermal sensor with 25 mm lens and 1,300 m detection range for sharp, long-range clarity.

• Compact and Lightweight: The Guide TE421 thermal monocular weighs only 295g — perfect for hunting and outdoor use.

• Fast Charging Performance: 10-minute quick charge provides 1 hour of use; full battery lasts up to 6 hours.

• Rugged Outdoor Build: IP67-rated housing resists rain, dust, and impact for reliable use in the field.

• Smart Connectivity: Wi-Fi and app control make the Guide TE421 thermal imaging monocular easy to stream, record, and share from anywhere.

• Versatile Outdoor Use: Ideal for hunting, wildlife spotting, and general thermal monocular outdoor use.

Full Specifications

What's In The Box

• Guide TE421 Thermal Monocular
• Lens cover
• Eye mask
• Wrist strap
• Quick charging adapter
• USB Type-C cable
• Quick use guide
• Safety Information Manual
• Warranty card

TargetIR App

Stream HD photos and videos from your Guide Sensmart device direct to your smartphone through WiFi integration. This app has the ability to remotely access the image bank of Guide devices and share content in real time on other applications.

About Guide IR

Established in 2016, Guide Sensmart is an up and coming R&D and manufacturer company of night vision devices who utilise their cutting-edge thermal firmware to create a wide variety of night vision products. Their products range from thermal monoculars, binoculars and scopes which are used for hunting, law enforcement and outdoor applications, to thermal surveillance cameras used for security and high-performance thermal cameras that are used for thermography, smart manufacturing and intelligent farming purposes. With an emphasis on integrity and environmental responsibility, Guide delivers innovative thermal and night vision products that enhance the everyday lives of people. 

Product Code: GUI-TIGUI005