The Guide TE425S Thermal Monocular combines high-sensitivity thermal imaging with a compact, easy-to-use handheld design. Its 400 × 300 @ 12μm thermal detector and NETD sensitivity of less than 15mK reveal fine temperature differences, providing clear and detailed imagery in darkness, fog and other challenging conditions.

Equipped with a 25mm objective lens, 1.9× base magnification and a detection range of up to 1,300 metres, the TE425S is well suited to hunting, wildlife observation, property surveillance and general outdoor use. Guide’s advanced APEXVISION image-processing system further improves image clarity, motion smoothness and long-range detail.

A simple one-button and control-ring layout makes the monocular easy to operate in the field, while its 0.32-inch AMOLED display provides sharp and comfortable viewing. The built-in rechargeable battery provides up to five hours of operation, with 20W fast charging available when a quick top-up is needed.

Features

High-Sensitivity Thermal Imaging: 400 × 300 @ 12μm detector with NETD sensitivity of less than 15mK.

Long-Range Detection: Detects heat signatures at distances of up to 1,300 metres.

APEXVISION Image Processing: Delivers enhanced clarity, sharper detail and smooth, ghost-free movement.

Compact Design: Streamlined handheld thermal monocular weighing approximately 320g.

Comfortable Viewing: 0.32-inch AMOLED display with an 800 × 600 resolution and 25mm eye relief.

Simple Operation: One-button and one-ring control system for fast and intuitive navigation.

Audio-Visual Recording: Captures thermal video with synchronised audio.

Fast Charging: Built-in rechargeable battery with support for 20W quick charging.

Wireless Connectivity: Built-in wireless hotspot for use with compatible mobile devices.

Rugged Construction: IP67-rated protection against dust and water.

Specifications

Sensor

Type: Uncooled VOx infrared detector, 8–14μm
Resolution: 400 × 300 @ 12μm
NETD: <15mK
Frame Rate: 50Hz

Lens

Objective Lens: 25mm
Field of View at 100m: 19m × 14m
Magnification: 1.9×–7.6×
Detection Range: Up to 1,300m

Display

Display Type: 0.32-inch AMOLED
Display Resolution: 800 × 600
Colour Palettes: White Hot, Black Hot, Red Hot, Green Hot, Iron Red, Blue Hot and Sepia

Eyepiece

Eye Relief: 25mm
Diopter Adjustment: -5 to +5

Hardware and Connectivity

Wireless Hotspot: Yes
Interface: USB Type-C
Microphone: Yes
Bluetooth: Yes

System Features

Recording: Video with audio
Image Processing: APEXVISION

Power and Battery

Battery Type: Built-in rechargeable battery
Operating Time: Up to five hours
Charging: Supports 20W quick charging
Quick-Charge Performance: Approximately one hour of operation from a 10-minute charge

Environmental and Durability

Operating Temperature: -20°C to +50°C / -4°F to +122°F
Protection Rating: IP67

Physical Dimensions

Weight: 320g
Dimensions: 157mm × 51mm × 47mm