Liemke Introduces German-Made Keiler 25.1 Thermal Monocular

Liemke, a leader in high-definition thermal imaging for hunting and nature observation, extends its popular Keiler line with the addition of the German-made Keiler 25.1. This newest thermal monocular has 384×288 pixel resolution, a 12µm VOx sensor, and 25 mm objective lens. The advanced image processing software has two quick-change modes to provide natural looking, detailed images rain or shine. Heat signature detection capability is out to 1,250 meters making this model an excellent choice for hunting in forests or fields.

The Keiler 25.1 is also easy and intuitive to operate. The central scroll wheel controls the menu, zoom and other functions. The menu has a standard, custom, and basic mode and a quick-access menu that can be customized for frequently used functions. The design makes it easy to locate all important buttons intuitively, even in complete darkness. The Keiler 25.1 also has an internal memory capacity of 32 GB, making it simple to capture photos and videos from your hunt.

“Liemke thermal optics have been a hit with hunters here in the U.S. and those who want to observe their surroundings and nature at night,” said Jason Evans, CEO, Blaser Group. “The new Keiler 25.1 is the smallest, most compact of our Keiler line. It’s easy to carry in a pocket and delivers powerful performance.”


25mm objective lens

Start-up time of only five seconds

Ceramic VOx detector with 384×288 pixel resolution

OLED display with 1024×768 pixel resolution

50 Hz refresh rate

2.4x basic magnification (digital zoom up to 10x)

Five color modes

Waterproof rating of IP67  (dustproof / waterproof for brief immersion)

Battery run time: up to 10 hours

Weight: 15.69 ounces

MSRP: $2,777.00

About Blaser Group                

The Blaser Group is the official U.S. importer for iconic German firearms brands Blaser, Mauser and J.P. Sauer; English gunmaker John Rigby & Co.; Minox optics and Liemke Thermal Optics. Established in 2006, the company which is based in San Antonio, Texas works with distributors, wholesalers, and over 200 authorized Blaser Group dealers across all North American states, with this figure continually growing. Today the Blaser Group’s industry-leading product portfolio includes bolt-action, combination rifles and over-and-under shotguns designed specifically for game hunters and competitive target shooters. Its custom shop offers exclusive engravings, design work and custom finishing for bespoke guns. With recent innovations, Blaser Group has gone on to expand its product portfolio into cutting-edge optics and accessory lines. For more information about the company and product lines, visit:

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