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Liemke  |  SKU: 80114764

Liemke Keiler 25.1 Thermal Imaging Monocular


Liemke Keiler 25.1 Thermal Imaging Monocular is available to backorder, order now and we will ship as soon as possible (typically within 3 to 10 working days unless notified otherwise).

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The Liemke (by Blaser) Keiler 25.1 offers a brilliant image with <40mK NETD 384x288 pixel 12μm VOx sensor and 25mm lens. The mature image processing software and two quick-change image modes for different observation conditions provide a natural looking image with very good detail identification. With the five color modes, you can use the device according to your preferences.

All hand-held thermal imaging devices from the Keiler family impress with their premium quality. They have the same functions and features, but differ in the detection range, field of view, sensor, and lens.  Whether you want an all-rounder or a specialist depends greatly on the conditions in your hunting grounds.

The central scroll wheel is the main control element: It can be used to intuitively control the menu, zoom, and other functions. The menu structure with standard, custom, and basic mode and the quick-access menu can be customized, allowing you to quickly access frequently used functions. The excellent tactile design allows you to locate all important buttons intuitively, even in complete darkness. Get ready: After switching on, the device is ready to use in just five seconds!

The battery lasts for up to ten hours and can be recharged with the fast charging function in just three hours through the USB-C port. The battery can be changed quickly and silently thanks to the bayonet mount.

Thanks to its WiFi function, it is easy to connect the Keiler-25.1 – just like the Keiler-1 and Keiler-2 – to the Liemke app. Photos and videos can also be stored conveniently to preserve your hunting memories for later on!


  • Objective lens: 25mm f/1.0
  • Field of view: 18.5x13.9 m / 100m – 10.5°x8°
  • Resolution and type: 384x288 VOx
  • Pixel pitch: 12μm
  • Pixel field of view: 0.48 mrad
  • Detection range: 1250m
  • Image frequency: 50hz
  • NETD: 40mK
  • Magnification: 2.4x optical - 10.0x digital
  • Focusing range: 1m to infinity
  • Display: 1024x768 OLED
  • Internal memory: 32GB
  • Wifi and app: Yes
  • Battery runtime: <10 hrs
  • Dimensions: 147x72x47mm
  • Weight: 445g
  • Waterproof: IP67
  • O perating and storage temperature: -20ºC to +50ºC / -40ºC to +70ºC

What you get

  • Liemke Keiler 25.1 Thermal Imaging Monocular
  • Liemke BP-K Li-Ion rechargeable battery
  • Hand strap
  • Neck strap
  • 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
  • User manual


This comes with a 3 year warranty from Liemke. See the User Manual that comes with the Liemke Keiler 25.1.

Important Information - UK Delivery Only

Thermal imaging and night vision products are strictly controlled by ITAR regulations and are subject to UK Government Export Licensing Regulations. Dependent on specification, a licence may need to be obtained prior to the export, even temporarily (e.g. holiday), from the UK.

Additionally, some countries may be embargoed, and no thermal imagers or night vision devices can be taken or exported to them. It is the responsibility of the exporter, whether it be a company or individual, to ensure that such a licence is obtained.

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