GUIDE TE 421 Thermal Monocular 400×300 25mm

The GUIDE TE 421 is a compact handheld thermal monocular designed for low-light observation and general outdoor use. It pairs a 400×300 @12µm infrared sensor with a 25mm F1.0 objective to provide extended detection capability in a pocket-sized package. The unit includes a 0.32'' AMOLED display, onboard recording, wireless connectivity, and an IP67-rated enclosure for all-weather operation.

Key Specifications

• The sensor resolution is 400×300 @ 12µm.
• The detection range is 1300 m (1400 yd).
• The objective lens is 25 mm F1.0.
• The display is a 0.32'' AMOLED screen.
• The detector NETD is 25 mK.
• The frame rate is 50 Hz.
• The magnification range is 1.9×–7.6×.
• Onboard storage capacity is 16 GB.
• Operating time on the built-in battery is 5 hours (supports 20W quick charging).
• The physical weight is listed as 295 g / 11.11 oz and the enclosure rating is IP67.

Rugged, feature-rich, and sized for handheld use, the GUIDE TE 421 delivers practical thermal observation capabilities with modern conveniences like Wi‑Fi, Bluetooth, and USB‑C charging. Its combination of a sensitive detector, fast lens, onboard recording, and weather-resistant construction makes it suitable for a range of outdoor observation tasks where reliable thermal imaging is required.