New-Plug-able IN-12 6-tube NIXIE clock with middle colons

This Plug-able  IN-12 6-tube NIXIE clock can be placed horizontally or tilted with tilt-back legs installed.


All NIXIE tubes and the middle neon bulbs(colon) are installed via electronic pins. You can replace the tubes and the middle colons by yourself by hand without using any tools.

IN-12 6-tube clock instructions(English Version)
New Dimmer Version
Adobe Acrobat Document 255.8 KB

Old and Historical instructions:

IN-12 6-tube clock instructions (English Version)
Adobe Acrobat Document 267.6 KB
IN-12 6-tube NIXIE clock
IN-12 6-tube NIXIE clock


In order to drive the NIXIE tube, some internal equipment are under the High Voltage (up to ~180V DC), please do not use this clock outside or in any wet conditions, please do not touch any part inside the clock when power supply is turned on. Always keep it away from kids.




Tube Name: IN-12(Made in the U.S.S.R.)


Clock Supply: 5V DC via USB;

Max Current: ~650mA;

Clock Size: 198mm(L)*61mm(W)*22mm(H)(~43mm(H)with IN-12 tubes installed);

PCB Size: 186mm*50mm;

PCB Color: Black;

Weight: 192g;

Working videos:

Features(For reference only):

1).5V USB powered, easy to be used. Can connect to your computer's USB plugs directly (*Recommend 5V/1A or up USB power adapter).

2).High efficiency HV circuit, you get almost no heat in 24*7 working condition;

3).All SMT components, very thin PCB; Static driving, No Flashing, High Brightness;
4).Support 12H or 24H display modes. Leading zero blanking is programmable.
5).Display date in all format: YY.MM.DD or DD.MM.YY or MM.DD.YY or even MM.YY.DD; Can display week info too.
6).Support a lot of different Effects: Normal/ Fading/ Cross Fading/Flash /Loop /Random Loop/ Scroll + Mix1/mix2 for displaying time(* Effects may will be changed in the future).
7).High accuracy RTC inside, DTCXO (temperature compensated crystal oscillator) version, High Stability, Highly accurate. It has ±1.9ppm (Equivalent to ±4.94s seconds of month deviation) under 0ºC~+40ºC. Usually you don't need to set the time for over a year.
8).Simple setting by using 3 buttons only and supports IR remote control (optional). Also has a new SNOOZE button.
9).Three alarms with weekends ON/OFF support can be controlled individually.
10).Three programmable Auto Power ON/OFF mode, can turn ON/OFF NIXIE tubes in any time you want. This function can save tubes life.
battery socket on-board for the RTC power which keeps RTC running during power outages. (*Prepare the CR1220 battery by yourself.)
13).Tri-colored RGB LED mounted under the each NIXIE tube. These LED(s) can display  pre-defined auto color change effects.
14).Store user settings in non-volatile memory.
15).Beautiful CAD designed acrylic case made using a laser cutter makes the clock look beautiful. You can assemble/disassemble the case by using only 4 screws on the bottom of the case. The case also has 2
tilt-back legs as feet on the bottom of the case to placed the clock tilted for easy to read the time on desktop.
16).Can install Temperature Sensor(optional) ;Can install wireless module(optional) for receiving the outside info, like the wireless temperature sensor's data and the GPS time sync data, etc.

IN-12 6-tube NIXIE clock
IN-12 6-tube NIXIE clock

Product Change Notification in the New Version:

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Comments: 1
  • #1

    Gert (Wednesday, 24 May 2017 12:58)

    Bought this clock from Ebay. Very nice clock, lots of feature and very nice craftmanship!