Liemke Keiler-2

• 640x512 VOx sensor: The high-resolution thermal core with a 12.00 μm pixel pitch gives the KEILER-2 the detail needed to separate animals from background clutter at longer distances, which is especially useful when scanning open ground or broken terrain.
• 50 mm F 1.1 objective: A large front lens gathers more thermal radiation and supports the monocular’s long-range role, helping the image stay more informative when identifying heat sources far beyond normal woodland distances.
• 2500.00 m detection range: This reach makes the device well suited to field and mountain observation, where early detection matters for planning an approach rather than reacting at the last moment.
• 1024×768 OLED display: The OLED screen presents thermal detail with strong contrast and a clean viewing image, reducing visual strain during longer observation sessions in darkness or poor weather.
• WiFi, photo and video recording: Built-in connectivity and onboard capture make it easier to document sightings, review observations later, or stream the view to a mobile device without adding external accessories.

About the Liemke Keiler Series

The LIEMKE KEILER series is a family of handheld thermal imaging devices built for hunters and outdoor users who need fast observation without adding bulk to their kit. Within the LIEMKE range, the KEILER line covers both general-purpose models and versions intended for longer-range observation, giving the series a broad role across field, forest, and mountainous terrain. The format stays deliberately compact, with a pocket-sized design that is easy to carry for long periods and practical to deploy quickly when game appears unexpectedly.

A defining trait of the series is its focus on ambidextrous operation and straightforward handling in the dark. LIEMKE positions KEILER models as handheld tools for hunting use, where image quality, portability, and simple controls matter more than unnecessary complexity. Across the family, models differ in detection range, field of view, sensor, and lens configuration, so users can choose between wider-area scanning or more distance-oriented observation. The series also supports image transfer to mobile devices, adding a practical digital element for recording, sharing, or reviewing thermal footage in the field.

About the Liemke Keiler-2

The Liemke Keiler-2 is the distance-focused model in the range, built for users who spend more time on open fields, large clearings, and mountainous terrain than in dense woodland. Its 2.70 x optical magnification and 50.00 mm objective lens shift the balance toward reach and detail at longer distances, making it easier to assess heat sources that would appear smaller in a wider-angle thermal monocular. That makes the KEILER-2 particularly well suited to observation tasks where early detection is more important than maximum close-range field coverage.

At the core of the device is a 640x512 VOx uncooled sensor with a 12.00 μm pixel pitch and 50.00 Hz refresh rate. In practice, this combination supports a fluid image while panning and enough sensor detail to interpret animal shape and movement more confidently at distance. The stated 2500.00 m detection range underlines its role as a long-range thermal monocular for hunting optics use, while the 1024×768 OLED display presents the thermal image with clear contrast for extended viewing sessions.

The KEILER-2 also adds practical field functions rather than just raw detection capability. WiFi connectivity allows connection to the LIEMKE app, while photo, video, and video output functions support documentation and sharing. A battery life of 9.00 h, compact 163.00 mm body, and 510.00 g weight keep the unit manageable for long evenings outdoors. With waterproof and fogproof construction, it remains usable in damp, cold, and changeable conditions where thermal observation is often most valuable.

About Liemke

LIEMKE has been active in thermal imaging since 2008 and focuses on thermal optics for hunting and outdoor use. The company developed its own optics from 2014, which reflects a clear specialization in this category rather than a broad generalist product range. Its portfolio includes the KEILER handheld line, the LUCHS pre-mounted thermal line, and the MERLIN series, showing a strong emphasis on practical thermal solutions for observation and hunting applications.

Since 2020, LIEMKE has been part of the Blaser Group. The brand is also known for integrating digital functions into its devices, including image transfer to mobile devices through Wi-Fi or cable. In this segment, LIEMKE has built its reputation around compact handling, application-focused design, and thermal imaging products tailored to real field use rather than general consumer electronics.

Main Features

• Magnification: 2.70 x
• Objective lens diameter: 50.00 mm
• Lens aperture: F 1.1
• Field of view: 154.00 m/1000m
• Field of view (angular): 8.80 °
• Detection range: 2500.00 m
• Thermal sensor type: VOx Uncooled
• Thermal sensor resolution: 640x512
• Pixel pitch: 12.00 μm
• NETD: 50.00 mK
• Refresh rate: 50.00 Hz
• Display type: OLED
• Display resolution: 1024×768
• Image capture: Yes
• Video recording: Yes
• Video output: Yes
• Connectivity: Wifi
• Battery life: 9.00 h
• Dimensions: 163.00 mm x 75.00 mm x 56.00 mm
• Weight: 510.00 g
• Focusing system: Central
• Working temperature range: -20°C to +50°C
• Waterproof: Yes
• Fogproof: Yes
• Built-in rangefinder: No

Warranty

LIEMKE provides a 2-year warranty for the Keiler-2.

In the Box

• Hand strap
• 1 LIEMKE BP-K Li-Ion rechargeable battery
• Neck strap Slim
• Neoprene cover
• Tripod adapter plate with screws and offset wrench
• Power supply unit with USB-C connection and 4 plug adapters
• Cable USB-C to USB-A
• Lens cleaning cloth
• Instruction manual