ATN OTS 4T 640 1.5-15x

• 640x480 thermal sensor: The higher-resolution sensor gives the OTS 4T more detail to work with at distance, helping separate animals, people, and background clutter more clearly during scanning and observation.
• 1.5-15x magnification range: The low 1.5x base magnification keeps a wide view for searching larger areas, while the upper end provides the reach needed to inspect heat signatures more closely without changing devices.
• 25 mK NETD sensitivity: Strong thermal sensitivity helps the monocular show smaller temperature differences, which is useful when targets blend into damp ground, vegetation, or other low-contrast surroundings.
• Obsidian IV Smart HD platform: Built-in recording, Wi-Fi connectivity, an electronic compass, and Smart Range Finder functions make the monocular more useful for documenting observations and sharing the image in the field.
• Up to 16 hours of battery life: Long runtime reduces the need to manage spare power during extended hunts, recovery work, patrols, or search tasks that continue well after dark.

About the ATN OTS 4T Series

The ATN OTS 4T series is a family of handheld Smart HD thermal monoculars built for users who need a compact observation device rather than a weapon-mounted optic. In ATN’s thermal lineup, the series sits as a versatile spotting and detection platform for hunting, stalking, game recovery, and search-and-rescue, combining thermal imaging with the digital functions of the company’s Obsidian 4T system. Across the range, ATN offers both 384 and 640 sensor variants and several magnification options, so users can choose between wider-area scanning and more distance-oriented observation.

Shared series features include the Obsidian IV Dual Core T processor, a 1280x720 HD microdisplay, onboard video recording, Wi-Fi video streaming, an electronic compass, and a Smart Range Finder. That combination gives the OTS 4T family a practical role beyond simple viewing: it can document sightings, stream the image to another device, and provide orientation and ranging support in the field. The series is designed around handheld thermal use, where quick target acquisition, clear digital presentation, and long operating time matter more than turret systems or reticles.

About the ATN OTS 4T 640 1.5-15x

The ATN OTS 4T 640 1.5-15x is the wide-view, high-resolution option in the OTS 4T family, pairing a 640x480 thermal sensor with a 1.5-15x magnification range. That configuration makes it especially well suited to scanning open ground, woodland edges, fields, and larger search areas where rapid detection matters first, but where the user still wants enough top-end magnification to examine a heat source in more detail. Its 24.00 ° field of view and 416.00 m/1000m maximum field of view support fast area coverage, which is a major advantage when tracking movement or checking multiple sectors from one position.

The sensor’s 25.00 mK NETD and 60.00 Hz refresh rate help the image stay readable and fluid when temperatures are close together or when the scene is changing quickly. In practice, that means better separation of animals or people from background terrain and smoother viewing while panning. The 1280x720 Micro - HD display gives the digital image enough resolution for comfortable observation, while onboard video recording and WiFi add useful documentation and sharing functions for hunting, surveillance, and recovery work.

With a 1050.00 m detection range, Li-ion power supply, and 16.00 h battery life, this thermal monocular is built for long sessions in the field. Its 220.00 mm length and 850.00 g weight keep it substantial enough for stable handheld use without becoming overly bulky, and the waterproof and fogproof construction supports use in poor weather and changing temperatures.

About ATN

ATN was founded in 1995 in Silicon Valley, California, and focuses on night-vision, thermal-imaging, and digital day-and-night optics. The company’s product range covers traditional image-intensifier night vision, digital night vision, and thermal devices, with a strong emphasis on integrating electronics and imaging functions into field-ready optics. ATN later introduced its X-Sight II HD digital day-and-night sight line in 2015 and expanded its Smart HD concept further with the Obsidian 4 Dual Core platform in 2018.

Today, ATN is a United States company headquartered in Doral, Florida. In the thermal and digital optics segment, it is known for combining imaging hardware with features such as onboard recording, wireless connectivity, ballistic tools, and digital interfaces. That background is directly relevant to products like the OTS 4T, where thermal performance and software-driven functionality are meant to work together in one handheld observation device.

Main Features

• Product type: Thermal monocular
• Series: ATN OTS 4T
• Magnification: 1.50 x - 15.00 x
• Field of view: 416.00 m/1000m
• Field of view (deg.): 24.00 °
• Min. field of view: 330.00 m/1000m
• Max. field of view: 416.00 m/1000m
• Eye relief: 25.00 mm
• Detection range: 1050.00 m
• Thermal sensor resolution: 640x480
• Thermal sensor pixel count: 0.31 MP
• NETD: 25.00 mK
• Refresh rate: 60.00 Hz
• Display type: Micro - HD
• Display resolution: 1280x720
• Display pixel count: 0.92 MP
• Video recording: Yes
• Video resolution: 1280x960
• Video output: Yes
• Connectivity: Wifi
• Built-in rangefinder: No
• Battery type: Li-ion
• Battery life: 16.00 h
• Length: 220.00 mm
• Width: 80.00 mm
• Height: 75.00 mm
• Weight: 850.00 g
• Color: Black
• Waterproof: Yes
• Fogproof: Yes

Warranty

ATN provides a 3-year warranty for the OTS 4T 640 1.5-15x, covering manufacturing defects in materials and workmanship under normal use.

In the Box

• Lens tissue
• USB-C cable
• Soft carrying case