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Tuning and getting the highest accuracy possible, of course, relies on precision, so grab the FX Keller Digital Manometer. No other Manometer available is as precise as this Swiss made FX Keller Digital model.

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For ultimate precision, the FX Keller Digital Manometer is your best option. Tuning and getting the highest accuracy possible, of course, relies on precision. And no other Manometer available is as precise as this Swiss made FX Keller Digital model.

You can use this manometer to replace the pressure gauges on the FX Impact M3 PCP Air Rifle. Naturally, as expected from FX Airguns, you get incredible and consistent precision in a digital display format. The ability to determine the correct pressure is very important when tuning an air rifle for optimal accuracy. Furthermore, you get an extremely long battery life. With standard usage you can expect the replaceable lithium battery to last up to 3 years. When needed, easily change the battery from the side of the gauge.

Many shooters desire to upgrade their second regulator gauge with the FX Keller Manometer. The precise accuracy it provides will be key in the internal tuning to maximize accuracy. You can also use the Keller gauge as a bottle gauge to show the exact fill of you onboard air cylinder.



Replaces factory analog gauges.
Removable lithium battery with up to 3 years of use.
Compatible with all models of the FX Impact M3 PCP Air Rifle.
Usable on any FX rifle (where space allows).
2 display and function types selectable by button: Pressure display, Shot display, Lifetime shots, Auto-Off, Calibration.
Switch display via button between two pressure gauge types: normal pressure display and pressure display with remaining shots and lifetime shots.



Pressure range / measuring range: 250 bar
Regulator = 150 bar, gas cylinder 230 – 250 bar
Operating temperature range: 10 – 40°C
Storage temperature: -30°C – 80°C
Media resistance: Air
LCD display: 3 digits, display bar, shot symbol and caution -symbol + Batlow
Battery Type: CR1632 / 3V / 125 mAh
Lifetime Battery: ON: >1 year OFF: >10 years
Dimensions housing: Ø 25.5 mm x 20 mm (28.5 mm) Ø 25.5 mm x 20 mm (28.5 mm)
Pressure connection – thread – wrench size: G1/8 – SW18 – 5 mm high


About FX Airguns

Fredrik Axelsson founded FX Airguns in the small picturesque town of Mariestad, Sweden in 1999. As a passionate airgun enthusiast, he was constantly on the look for the best airgun available. When Fredrik didn’t find what he was looking for, he started on his journey. Dedicated to create the airgun of his dreams. Two decades later, he has more than succeeded.

The highly skilled FX team relentlessly introduce cutting edge technologies. FX Airguns propelled the airgun industry into a new era, where they are globally considered an industry leader. As intricate as their guns are, the philosophy behind their creations is quite simple; to provide the most exceptional airgun in every possible way; and so, they have.

A team of over 50 Swedish craftsmen and engineers that have honed their skills to perfection lovingly handcraft FX’s airguns; and airgun lovers worldwide have rightfully come to expect much from them. An FX Airgun won’t leave the factory until it has been thoroughly tested in all aspects of its masterfully engineered capacities. FX Airguns provide superior accuracy, dependable consistency, as well as being remarkably quiet, efficient and extremely powerful.

A trailblazer for the airgun industry since its inception, their merit list is long. They have more patents, unique innovations and are more technologically advanced than any other airgun manufacturer existing today.

The backbone of FX Airguns has always been and will always be their deep passion for the airgun sport and their drive to outperform yesterday.


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