Dali S256 Thermal Monocular

• 640x480 thermal sensor: The higher sensor resolution gives the Dali S256 Thermal Monocular a cleaner image with better target definition, which helps when scanning wider areas and deciding faster whether a heat source is game, livestock, or background clutter.
• 35.00 mm objective and 1500.00 m detection range: This combination is suited to open-field observation, giving the monocular enough reach to pick up distant heat signatures while still remaining compact enough for handheld use.
• 50.00 Hz refresh rate: A faster image update keeps movement looking more natural, which matters when tracking walking animals or panning across terrain without the jerky effect common to slower thermal devices.
• WiFi, photo and video recording: Built-in connectivity and onboard capture make it easier to document sightings, review observations later, or share the live view with a mobile device in the field.
• Compact weather-resistant build: At 190.00 mm long and 500.00 g, with waterproof and fogproof construction, the S256 is practical for regular outdoor carry in changing weather and low-visibility conditions.

About the Dali Thermal Monoculars Series

Dali Thermal Monoculars sit within the company’s outdoor thermal range and are built for users who need a compact handheld device for observation rather than a weapon-mounted optic. In this family, the S25X series uses uncooled focal-plane-array detectors, giving it the core thermal architecture expected for hunting, wildlife observation, and general outdoor use in darkness, fog, or visually cluttered terrain. The series is designed around practical field handling, with a small format that supports one-handed use and quick scanning.

Across the range, Dali equips these monoculars with features that matter in real use rather than only on a specification sheet. Functions such as Wi-Fi image transmission, picture-in-picture, hot spot tracking, digital zoom, and photo and video recording make the series useful both for live observation and for documenting what has been seen. The platform is aimed at thermal imaging tasks where fast target detection is more important than daylight-style image detail, and where a simple handheld format is preferable to a larger binocular or riflescope-style device.

About the Dali S256 Thermal Monocular

The Dali S256 Thermal Monocular is the highest-resolution version in this configuration, pairing a 640x480 uncooled FPA sensor with a 35.00 mm objective lens. In practice, that gives it a clear advantage for users who want better target separation at distance and a more informative image when scanning hedgerows, field edges, woodland openings, or open ground at night. Its 2.00 x base magnification is useful for general searching, while the 4.00 x maximum magnification extends observation without turning the device into a narrow, difficult-to-hold specialist optic.

The thermal core uses a 17.00 μm pixel pitch and a 50.00 Hz refresh rate, so moving targets appear smoother and easier to follow when the user is walking or panning. A stated 1500.00 m detection range makes the S256 suitable for early spotting, while the broad 17.70 ° field of view helps cover ground efficiently at shorter and medium distances. The HD LCD display with 1280x960 resolution provides a detailed viewing image, and the monocular also supports image capture, video recording, and video output for documentation or external viewing.

For field use, the S256 remains easy to carry at 500.00 g and 190.00 mm in length. Its Li-ion power supply supports around 5.00 h of battery life, while waterproof and fogproof construction helps maintain reliability in damp mornings, cold evenings, and variable weather. WiFi connectivity adds practical flexibility for mobile viewing and sharing in the field.

About Dali

DALI traces its origins to the Zhejiang Provincial Testing Technology Research Institute, established in 1984. The company was restructured in 2001 and was listed on the Shenzhen Stock Exchange in February 2008. Based in Hangzhou, Zhejiang, China, DALI focuses on infrared and optoelectronic technology rather than general sporting optics, which is directly relevant to products such as thermal monoculars.

Its expertise includes uncooled focal-plane-array detectors, infrared thermal-imaging cameras and systems, thermal-imaging platforms, and other optoelectronic products. The company also presents IRtech as a professional thermal-imaging brand originating from DALI. Within its outdoor range, DALI covers handheld monoculars, thermal riflescopes, and binocular-style devices, reflecting a product focus on practical thermal observation and detection tools.

Main Features

• Magnification: 2.00 x
• Maximum magnification: 4.00 x
• Objective lens diameter: 35.00 mm
• Field of view: 307.00 m/1000m
• Field of view (deg.): 17.70 °
• Detection range: 1500.00 m
• Thermal sensor type: Uncooled FPA
• Thermal sensor resolution: 640x480
• Pixel pitch: 17.00 μm
• NETD: 80.00 mK
• Refresh rate: 50.00 Hz
• Calibration mode: Automatic, Manual
• Display type: HD LCD
• Display resolution: 1280x960
• Image capture: Yes
• Video recording: Yes
• Video output: Yes
• Connectivity: Wifi
• Built-in rangefinder: No
• Battery life: 5.00 h
• Power supply: Li-ion
• Dimensions: 190.00 mm x 70.00 mm x 70.00 mm
• Weight: 500.00 g
• Working temperature range: - 20°C / + 50°C
• Waterproof: Yes
• Fogproof: Yes

Warranty

The Dali S256 Thermal Monocular is covered by a 2-year warranty.