Thermal Imaging Sight GUIDE N425 25mm 400x300px 2.3-9.2x

The GUIDE N425 thermal imaging sight is an electro-optical device engineered for observation and precise target engagement at medium ranges under demanding environmental conditions. Built on an uncooled 400×300 VOx focal plane array paired with a 25mm objective lens, the sight delivers 2.3x optical magnification with up to 9.2x digital zoom capability, maintaining clear imagery through complete darkness, dense fog, or heavy smoke.

Technical Specifications

Parameter	Value
Model	GUIDE N425
Sensor Type	Uncooled Vanadium Oxide (VOx)
Resolution	400×300 pixels
Pixel Pitch	12 µm
Spectral Range	8–14 µm
Thermal Sensitivity (NETD)	≤ 40 mK
Objective Lens	25 mm, F1.0
Optical Magnification	2.3x
Digital Zoom	1x, 2x, 4x (total 2.3–9.2x)
Display	OLED, 1024×768 pixels
Frame Rate	50 Hz
Human Detection Range	up to 1000 m
Power Source	Interchangeable 18650 battery
Battery Life	up to 5 hours
Protection Rating	IP67
Operating Temperature Range	−30°C to +50°C
Dimensions	230×90×75 mm
Weight	670 g

Commentary / Comments

The primary advantage of the GUIDE N425 lies in its balanced pairing of a 400×300 (12 µm) detector with high-grade OLED optics running at a 50 Hz refresh rate. This configuration eliminates motion blur and frame latency when tracking dynamic targets. The thermal sensitivity threshold of NETD ≤ 40 mK allows the system to register minimal temperature gradients, facilitating the identification of personnel or equipment partially obscured by vegetation or camouflage netting.

The IP67 waterproof-rated chassis protects internal electronics against downpours, snow accumulation, and dust ingress, while the expanded operating temperature envelope of −30°C to +50°C ensures round-the-year operational readiness. Utilizing standard 18650 rechargeable batteries streamlines field logistics, allowing operators to perform hot swaps in seconds directly at firing positions.

Target Audience / Suitable For

Infantry marksmen and military operators conducting nighttime direct-fire tasks gain a reliable optic for engagement at medium distances. The 2.3x base magnification provides sufficient field of view for threat detection across a sector, while digital zoom up to 9.2x allows detailed target identification prior to engagement. High recoil resistance and IP67 weather sealing ensure consistent zero retention and durability under sustained field use.

Reconnaissance observers and static post sentries utilize this thermal sight to acquire thermal signatures at distances reaching 1000 meters. The high 50 Hz frame rate delivers smooth tracking of fast-moving targets without smearing, and the high-contrast OLED display mitigates operator eye fatigue during extended night shifts. Rapid battery changes using commercial 18650 cells minimize downtime during continuous monitoring missions.

Marksmanship instructors and night-vision equipment specialists can employ this optic to train personnel in target acquisition, thermal identification, and engagement techniques under low-light conditions. Intuitive menu navigation, configurable reticle options, and stable zeroing mechanisms make the sight well-suited for high-throughput training courses and rapid familiarization.

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Thermal Imaging Sight GUIDE N425 25mm 400x300px 2.3-9.2x

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SKU: 8990

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