ELITE NL840 Nixie Clock Kit (No Tubes)

Price: £69.95

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Compatible with NL840, NL841, NL842, NL844, NL845, NL846, NL900, NL901 and CK8754 Nixie Tubes.
Introducing a new clock, with exciting new features. ELITE Class Nixie Clocks work best in conjunction with our new XTERNA outdoor, wireless time and temperature transmitter module, to report accurate GPS time and also outdoor temperature with min / max function. Additional highlights of the ELITE Class Clocks are direct tube drive, double dot colon neons, PIR Motion Sensor Input, RGB accent lighting. 

Here are the key features of the ELITE Nixie:

  • Hours, Minutes and Seconds display
  • Direct drive to six medium size Nixie Tubes
  • Compatible with NL840, NL841, NL842, NL844, NL845, NL846, NL900 and NL901 Nixie Tubes.  
  • Noiseless, Direct Drive giving optimum digit clarity
  • Uses a Quartz Crystal Oscillator as the timebase
  • 12 or 24 hour modes
  • Programmable leading zero blanking
  • Date display in either DD.MM.YY or  MM.DD.YY or YY.MM.DD format
  • Programmable date display each minute
  • Scrolling display of date or standard display
  • Alarm, with programmable snooze period
  • Optional GPS / XTERNA synchronisation with status indicator LED
  • Dedicated DST button to switch between DST and standard time
  • Supercapacitor backup. Keeps time during short power outages
  • PIR Motion Sensor input and accessory available. Configurable timeout period
  • Simple time setting using two buttons
  • Configurable for leading zero blanking
  • Double dot colon neon lamps with cover glasses
  • 11 colon neon modes including AM / PM indication (top / bottom or left / right), railroad (slow or fast) etc.
  • Seconds can be reset to zero to precisely the set time
  • Programmable night mode - blanked or dimmed display to save tubes or prevent sleep disturbance
  • Rear Indicator LEDs dim at night to prevent sleep disturbance
  • Weekday aware ‘Master Blank’ function to turn off HV/ tubes and LEDs on weekends or during working hours
  • Separate modes for colon neons during night mode
  • Standard, fading, or crossfading with scrollback display modes
  • ‘Slot Machine’ Cathode poisoning prevention routine
  • Programmable RGB tube lighting – select YOUR favourite colour palette
  • 729 colours possible. Have a different colour or your choosing every hour, or autochanging colours
  • Not AC frequency dependent – works in all countries
  • All user preferences stored to non-volatile memory
  • Additional wireless functions if XTERNA module used:
    - Display of outdoor temperature in Celsius or Fahrenheit each minute.

    Min / Max temperature in last 24 hours
    Wireless, Auto Sync of time from GPS with auxilliary TCXO
    GPS Sync time, and time since last GPS Fix
    Voltage of XTERNA module battery
    Firmware version of XTERNA module 

Download Kit Assembly Instructions Here

Full kit of parts, including double dot neon colons with glass covers, 433 MHz receiver module,
pre-soldered SMD ICs, tube sockets, RGB LEDs and more. Double Dot Neon Colons with cover glasses. All parts included.

Hex standoffs not included. If you buy one of our cases, all hardware is included anyway. If you are making your own case and need some standoffs, we have several sizes here.

Two HV5622 High Voltage driver ICs are used, for direct drive. The absolute best way to drive tubes for best brightness and no noise.

The Included 433 MHz receiver module plugs directly into the back of the PCB, to receive time and temperature data from an XTERNA module. One XTERNA module can service as many compatible clocks and thermometers as you want. (Our longest standing customers will know what we mean!)

Pictured here is the IN-8 ELITE in the PRISMA case, available in the Cases section of our store. Many other cases are also available


A very useful addition is the PIR Motion Sensor, which powers down the clock when the room is empty. 

Compatible with our XTERNA Time / Temperature Transmitter:



A 12V DC power adapter of minimum 500mA is needed for the clock. We have a very high
quality unit with a long 1.8m (6ft) cable in our store HERE

Download Kit Assembly Instructions Here

  • Model:
  • Shipping Weight: 0.205kgs
  • 57 Units in Stock

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