(Inc. 20% VAT)
(£1,480.00 Exc. VAT)
(2 Reviews)

No more compromises – meet the LXNAV S100, the ultimate standalone digital variometer. 

With unparalleled functionality and connectivity, the LXNAV S100 is the most advanced standalone variometer ever produced, packaged into a single unit for mounting into a standard 80mm instrument hole. For mounting into a 57mm hole, the smaller LXNAV S10 is the ideal solution.

The LXNAV S100 digital variometer includes a built in IGC flight recorder for badge, competitions and record claims, a backup battery in case your glider’s power supply should ever fail in flight and Bluetooth connectivity for connecting easily to your Naviter Oudie, Android or Apple device.




More Information

See what's in the box:

The new generation S-series variometers from LXNAV

The new generation S-series variometers from LXNAV

Functionality never seen before

The S-series variometers’ all-glass displays allow for more functionality including a moving map display for task and airspace navigation, a Flarm radar, thermal assistant and an artificial horizon display (optional software upgrade). The larger display also allows much easier to read navboxes, a faster responding vario pointer and the display of more information including flap speeds and a visual wind speed and bearing vector.

Superior connectivity 

All of the new generation varios are also designed with connectivity to your other avionics in mind. The varios are built with two data ports on the back, one for a GPS input, the other for connecting to your preferred PDA moving map display.

The optimum setup is to connect a FLARM device in to the LXNAV vario through the GPS port, this allows GPS information and FLARM data to be fed to the variometer. The variometer can then use the GPS data for navigation, final glide computation and wind vector calculation and the FLARM data for displaying FLARM targets, providing warnings and even reading them out to you so you don’t even have to look down at that critical moment!

The PDA port is best connected to the Naviter Oudie range of devices via the CC-NP-Oudie cable but can also be connected to Android or Apple devices via the S100’s built-in Bluetooth. This allows the PDA to receive the GPS data from the GPS input port for more accurate task navigation, as well as FLARM target information – this means detected FLARM targets will appear on your moving map with configurable information such as climb rates, Comp IDs and the targets’ range from you. The PDA and vario will also exchange variometer information such as MacCready setting, water ballast and wind vector information. Lastly when you have set your task in your PDA while in briefing or on the grid, you can simply upload that task from your PDA to both the variometer and the device connected to the GPS port (FLARM IGC or IGC flight recorder) in one go, saving having to manually put your tasks into multiple devices when you just want to go flying!

The LXNAV S100 makes the ideal replacement for your aging 80mm electronic variometer that does not easily connect to your FLARM and PDA.


The S100 can be upgraded through the addition of a remote stick, activation of the artificial horizon display, Flap sensor, CAN Radio bridge and MOP 2 sensor for gliders with electric propulsion.



  • Bluetooth integrated
  • Built-in Battery which serves up to 3h of operation
  • High level approved IGC flight recorder
  • Built in GPS module
  • ARM Cortex-M4 processor running on 160MHz
  • 3.25” or 2.5'' QVGA sunlight readable screen with 1200nits
  • QVGA (320*240pixels) sunlight readable display
  • Digital temperature compensated pressure sensors for altitude and airspeed
  • Inertial platform 3 axis digital +-8g accelerometer, 3 gyroscopes (for inertial vario, AHRS and wind calculation - AHRS can be activated with the code)
  • Smooth audio output
  • Audio equalizer
  • Integrated synthesized speech output 
  • Audible thermal assistant
  • External SD card for configuration, flarmnet and firmware update
  • 2 rotary switches (knobs) with push button function and 3 push buttons are used for input
  • ALS (ambient light sensor)
  • 6 digital inputs - SC, VP + 4 custom defined
  • 80 mm or 57 mm

User Interface

  • Moving map with airspace track up option
  • Airspace display
  • Waypoints and Task display
  • AHRS display (optional)
  • Thermal assistant
  • Display of 4 configurable (navboxes) values
  • Display of 3 configurable (navboxes) values on map screen
  • Waypoint navigation
  • TASK navigation
  • Flarm radar
  • Flarm warnings
  • Flarm Net
  • Logbook (Integrated High level approved flight recorder)

Colour display

  • 16 bit colour display
  • 3.25” or 2.5”(~ 9cm or 6.5cm) screen
  • 320 by 240 pixel resolution
  • 1200 nits brightness


Input and output

  • Flarm port input/output on RS232 level (standard IGC 6 pin connector RJ11)
  • PDA port input/output on RS232 or TTL level for PDA/PNA devices with 5V power supply (8 pin RJ 45, 5V output max 2A)
  • Audio output
  • 1Mbit CAN bus for connection for S8D or S80D repeater, Compass module or Remote stick
  • Speed command and Vario priority input and 4 additional user defined inputs
  • Two Rotary knobs with push function
  • 3 push buttons



Optional accessories

  • AHRS activation with a CODE - no need of any hardware upgrade
  • Remote stick (CAN)
  • Compass module (not supported yet - under development)
  • S80D/S8D repeater unit
  • Oudie
  • Nano/Nano3
  • CAN2PD Second seat PDA support


Power supply

  • Power input 10-16V DC
  • Consumption of LXNAV S10 at 12 V:
    • 230 mA - minimum brightness without audio
    • 270 mA - maximum brightness without audio
  • Consumption of LXNAV S8D at 12 V:
    • 90mA - maximum brightness
    • 140 mA - maximum brightness without audio


Size and weight

  • Standard 80mm (3.25”) or 57mm (2.5") hole
  • S10 61x61x70mm (excludes connectors)
  • S100 81x81x64mm (excludes connectors)
  • S10 weight: 345g
  • S100 weight 515g
Customer Reviews
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2 Reviews:

27 May 2024  | 

Fabulous service: slick delivery and an informed team!

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S100 and Service
18 March 2022  | 

This is a great little instrument! I liked it so much in my old glider I've just got another. It integrates very well with Flarm and Nav devices. In my case combinations of Red Box Flarm + Oudie 2 in the old glider and now PowerMouse + Android (via bluetooth) in my new setup. The AHRS is really smooth and accurate, I can't comment on HAWK yet as I didn't have that on my old S100. Excellent service and support from Navboys as always, helping to get everything connected and working.

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