Dali S240 Thermal Monocular

• 384x288 thermal sensor: The uncooled FPA sensor gives this thermal monocular enough detail for reliable target detection and scene interpretation, helping users distinguish heat sources more clearly than entry-level lower-resolution units.
• 2x base magnification with 4x maximum magnification: A moderate starting magnification keeps observation practical at typical field distances, while digital zoom adds extra reach when checking a suspected heat signature.
• 50 Hz refresh rate: Fast image refresh keeps movement looking smoother during scanning, which makes it easier to follow animals, people, or vehicles without the image feeling delayed.
• WiFi connectivity with photo and video recording: Wireless connection and onboard recording make it easier to document observations, review footage later, or share the live view with a mobile device in the field.
• Compact 500 g housing: The light, hand-friendly format supports mobile use and longer observation sessions, while waterproof and fogproof construction helps the monocular stay usable in difficult weather.

About the Dali Thermal Monoculars Series

Dali Thermal Monoculars sit within the company’s outdoor thermal-imaging range and are built for users who need a compact handheld device for hunting, observation, and outdoor travel. The series focuses on practical field use rather than bulky specialist equipment, combining one-handed handling with core thermal functions that matter most when scanning terrain in darkness, fog, or mixed cover.

Across the range, Dali uses uncooled focal-plane-array thermal detectors and equips its monoculars with features such as WiFi image transmission, photo and video recording, digital zoom, and hotspot tracking. In the broader family, display formats and model layouts vary by generation, but the design philosophy stays consistent: compact dimensions, straightforward controls, and thermal imaging that is easy to use with a low learning curve. That makes the series suitable for users who want a handheld thermal monocular for regular field observation without moving to a larger binocular or weapon-mounted system.

About the Dali S240 Thermal Monocular

The Dali S240 Thermal Monocular is a compact handheld thermal device built around a 384x288 uncooled FPA sensor with a 17.00 μm pixel pitch and 50.00 Hz refresh rate. In practical use, that combination gives the monocular enough thermal detail for dependable short- to mid-range observation while keeping moving subjects easier to track during scanning. With a stated detection range of 750.00 m, it is well suited to locating heat sources beyond the reach of conventional daylight optics in poor visibility or complete darkness.

The optical setup uses 2.00x magnification with a maximum of 4.00x and a 25.00 mm objective lens. This gives the S240 a useful balance between situational awareness and image scale. Its 21.70 ° field of view helps when sweeping wider areas, while the added digital magnification is useful for checking whether a distant heat source deserves a closer look. The 640x480 LCD display presents the thermal image clearly enough for handheld observation, and automatic or manual calibration lets the user manage image consistency as conditions change.

For field practicality, the S240 includes WiFi connectivity, photo capture and video recording, and video output. These functions make it easier to document sightings or review observations after the session. The housing remains portable at 500.00 g and measures 190.00 mm in length, with waterproof and fogproof construction for use in changing weather. A Li-ion power supply with 5.00 h battery life supports mobile use, and tripod adaptability adds stability for longer observation periods.

About Dali

Dali traces its origins to the Zhejiang Provincial Testing Technology Research Institute, established in 1984. The company is based in Hangzhou, Zhejiang, China and was restructured in 2001 before being listed on the Shenzhen Stock Exchange in February 2008. Its work centers on infrared and optoelectronic technology rather than consumer sporting optics alone, which gives the brand a strong technical foundation in thermal imaging.

Dali develops infrared core components, thermal-imaging systems, optoelectronic inertial-navigation products, and other complex optoelectronic systems. Its expertise includes uncooled focal-plane-array detectors and infrared thermal-imaging cameras and systems, both of which are directly relevant to handheld thermal devices such as the S240. In the outdoor segment, Dali’s range includes thermal monoculars, riflescopes, and binoculars, while IRtech is presented as a professional thermal-imaging brand originating from Dali.

Main Features

• Product type: Thermal monocular
• Magnification: 2.00 x
• Maximum magnification: 4.00 x
• Objective lens diameter: 25.00 mm
• Field of view: 376.00 m/1000m
• Field of view (angular): 21.70 °
• Detection range: 750.00 m
• Thermal sensor type: Uncooled FPA
• Sensor resolution: 384x288
• Pixel pitch: 17.00 μm
• NETD: 80.00 mK
• Refresh rate: 50.00 Hz
• Calibration mode: Automatic, Manual
• Display type: LCD
• Display resolution: 640x480
• Image capture: Yes
• Video recording: Yes
• Video output: Yes
• Connectivity: Wifi
• Battery life: 5.00 h
• Power supply: Li-ion
• Length: 190.00 mm
• Width: 70.00 mm
• Height: 70.00 mm
• Weight: 500.00 g
• Working temperature range: - 20°C / + 50°C
• Waterproof: Yes
• Fogproof: Yes
• Tripod adaptable: Yes
• Built-in rangefinder: No
• Color: Black
• Made in: China

Warranty

Dali provides a 2-year warranty for the Dali S240 Thermal Monocular.