When evaluating a China tactical digital day night sight, buyers typically face one core challenge: matching a device's detection range, weight, and imaging technology to a specific mission profile—whether that is short-range personnel identification, extended thermal observation, or sniper-grade engagement in fog, smoke, or darkness. HONG KONG JINZHUO INDUSTRY LIMITED offers a structured product matrix of seven devices across five distinct lines, each engineered for a defined observation and aiming envelope. Understanding how these lines differ is the first step toward selecting the right sight.
Understanding the Product Matrix
The full lineup spans five categories: Day/Night Observation and Aiming Sights, Night Vision Series Sights, Thermal Series Sights, Infrared Sights, and RB90G/120G Thermal Sights. Each line is built around a different operational distance and connection method—some mount directly on the rifle, while others are designed to work in series with an existing white light scope. This distinction matters because it determines whether an operator needs to replace a current optic or simply add capability to one already fielded.
Day/Night Observation and Aiming Sights for Short-Range Missions
The 300m Day/Night Observation and Aiming Sight is positioned for day and night observation, aiming, and image acquisition/transmission for individual living targets within 300m. Its recognition distance for upright personnel reaches ≥300m, with a minimum equivalent magnification of ≥3× and a field of view of ≥8° (horizontal) × 6° (vertical). Operator comfort is addressed through an eye point distance of ≥30mm and a visual adjustment range of -5SD to +2SD, accommodating different vision needs. Aim-point stability is supported by a zoning adjustment range of ≥±20mil with accuracy of ≤0.25mil and zero travel of ≤0.5mil, meaning the sight holds its zero after repeated loading and height or direction adjustments. At ≤0.9kg including battery, eyecup, and objective lens cover, it remains light for extended carry, with an MTBF ≥1000h (θ1) and operating temperature range of -40°C to +55°C.
Night Vision Series Sights for Series-Connected Setups
For operators who already use a white light scope, the 1× Night Vision Series Sight connects in series rather than replacing the existing optic. Under moonless starry sky with an opaque background, the clear distance for upright personnel is ≥100m, with a recognition distance of ≥300m. Visual magnification is 1×, preserving the host scope's native magnification, with a field of view of 6.6°. Excluding the distance-enhancing eyepiece, it weighs ≤0.8kg, and reliability is rated at MTBF ≥2000h.
Thermal Series Sights for Extended Night Observation
The 5× Thermal Series Sight extends observation well beyond visible night vision range. Under conditions of target-background temperature difference ≥6°C, relative humidity ≤65%, atmospheric visibility ≥10km, and an opaque background, upright personnel recognition distance reaches ≥1000m, while moving vehicle recognition distance reaches ≥2000m. It includes infrared image enhancement processing to improve usability under complex night conditions, offers 5× visual magnification, a field of view of 6.2° × 4.7°, and continuous working time of ≥8h. Weighing ≤1.5kg excluding distance-enhancing eyepieces, it is also built to meet the half-life requirements of high-precision sniper rifle live fire.
Infrared Sights for Rifle-Mounted Night Engagement
Within the Infrared Sights line, the Lightweight Infrared Sight uses interchangeable connection bases for various standard automatic rifles and short automatic rifles, enabling night aiming at living targets within 300m and observation of terrain, features, and military targets within 500m. It carries an uncooled infrared detector with 384×288 resolution, 12μm pixel size, and NETD ≤40mk, paired with an OLED binocular display at 800×600 resolution and eyepiece eye relief of >35mm. Total weight is ≤1kg, and it operates across -40°C to +60°C with storage tolerance of -45°C to +70°C. Functions such as electric optical focusing, electronic zoom, image polarity conversion, video gain adjustment, brightness adjustment, and a ballistic reticle overlay based on actual firing tables become available after auto calibration.
For medium-range engagement, the 1280 Heavy Infrared Sight 2 enables accurate night shooting of personnel targets within 700m and effective strikes on light armored vehicle targets within 1500m. Its detector resolution rises to 1280×1024 with the same 12μm pixel size and NETD ≤40mk, supported by a wider 10° × 7.5° (nominal) objective lens field of view and an eyepiece eye relief of >45mm. The base group, as the central component, uses an integrated design that strengthens the mirror-gun connection and reduces sealing links, while a Picatinny quick clamp mechanism with pressure plate and lock nut allows fast installation and removal. Weight is ≤1.35kg, with moving individual and vehicle target recognition distances of ≥1000m and ≥1800m respectively under specified visibility and humidity conditions.
RB90G/120G Thermal Sights for Sniper Applications
The RB90G (H) Thermal Sight is designed for tactical operation on sniper guns in fog, smoke, and darkness, and is also applicable for surveillance. It uses an uncooled FPA Microbolometer detector, 8-14 μm spectral range, 384 × 288 pixels (640 × 480 option), NETD ≤80mk, a 90mm focal length, and supports a programmable reticle for different sniper guns, with up to 8 reticles available. Features include 4X electronic zoom, white hot/black hot image color, and automatic/manual offset & gain control, with a battery operating time of 5 hours and weight of 1.4kg without battery.
The RB120G (H) Thermal Sight extends focal length to 120mm with F# 1.2, producing a narrower field of view of 3.12° × 2.34° / 5.19° × 4.15° for longer-range thermal detail. Thermal sensitivity improves to NETD ≤60mk, while retaining the same 8-14 μm spectral range, programmable reticle up to 8 reticles, and 4X electronic zoom. Battery operating time is 4 hours, and weight without battery is 1.55kg.
How to Choose the Right Sight for Your Mission
Selection depends on three factors drawn directly from the product specifications above: engagement distance, connection method, and weight tolerance. Operators needing day-and-night aiming within 300m should consider the 300m Day/Night Observation and Aiming Sight. Those with an existing white light scope can add night capability through the 1× Night Vision Series Sight or extend range further with the 5× Thermal Series Sight. For rifle-mounted uncooled thermal aiming, the Lightweight Infrared Sight suits 300m-500m missions, while the 1280 Heavy Infrared Sight 2 addresses 700m-1500m engagements against personnel and light armored vehicles. Sniper-specific requirements in fog, smoke, or darkness point toward the RB90G (H) or RB120G (H) Thermal Sights, with the latter offering extended focal length for longer-range detail. Across all seven products, HONG KONG JINZHUO INDUSTRY LIMITED maintains consistent documentation of detector type, resolution, field of view, and environmental tolerance, allowing operators to compare each device against their specific mission distance and weight budget before making a final selection.
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HONG KONG JINZHUO INDUSTRY LIMITED
