Guide TA425 Thermal Imaging Front Attachment

The Guide TA425 transforms your daytime spotting scope into a thermal imager in seconds—without re-zeroing. Compact and rugged, it weighs just ~400 g and features IP67-rated durability and resistance to −30 °C to +50 °C temperatures.

Equipped with a 25 mm f/1.1 lens and a VOx thermal sensor (384 × 288 @ 17 µm; NETD ≤ 50 mK), it delivers clear thermal imagery via a bright 0.39″ color OLED display (1024×768) at 50 Hz. Its field of view is approximately 14.6° × 11.0°, equivalent to 25.4 m × 19.1 m at 100 m. The TA425 includes up to 4× digital zoom for enhanced detail.

About the Guide TA Series

The TA Series comprises versatile clip-on modules that quickly mount in front of standard optics. They serve as both stand-alone thermal monoculars and front-mounted attachments. Designed for fast deployment, they’re ideal for hunting, wildlife observation, and surveillance.

Key Features

• 384 × 288 VOx thermal sensor, 17 µm pixel; NETD ≤ 50 mK
• 25 mm f/1.1 manual-focus lens
• Field of view at 100 m: ~25.4 m × 19.1 m
• Optical magnification: 1×; Digital zoom: 1×, 2×, 4×
• 0.39″ color OLED display, 1024×768; 50 Hz refresh
• Color palettes: White Hot, Black Hot, Red Hot, Green Hot
• Scene modes: Enhanced, Highlight, Natural
• Hot-spot tracking and auto/manual calibration
• Automatic shutdown and sleep timer (5–60 minutes)
• Powered by 2 × CR123A batteries (≈ 3 h runtime)
• Interfaces: Analog video via LEMO; supports external power
• Lightweight (≈ 400 g); dimensions: 150 × 52 × 57 mm

About Guide Sensmart

Guide Sensmart is a global leader in rugged thermal imaging solutions, with decades of innovation and distribution across more than 70 countries—trusted by outdoor professionals worldwide.

What’s in the Box

• Guide TA425 Thermal Clip-On Attachment
• Charger
• Display cable (LEMO/USB)
• Soft storage case
• Quick Start Guide and Warranty Card

Warranty

Backed by a 2-year manufacturer warranty. Mounts using the Guide M33.5×0.75 front-clip standard.