Made in the USA. A six-digit Nixie clock featuring ZM570 side view nixie tubes. The Led underlighting is selectable. The time can be automatically set using a GPS module option or Wi-Fi module option. It can display the date in mm/dd/yy format once per minute. Neon bulbs as colons match the neon nixie tube display. Uses all standard size components (not surface mount "throwaways") so it can actually be repaired as opposed to other designs. The microcontroller and decoder chips are in sockets for easy replacement. Homemade, not a commercial product. User selected 120VAC (U.S. standard) or 240VAC (some other countries) I will ship it anywhere in the world, but I cannot be responsible for problems and/or delays caused by customs in your country. International buyers, please send your address for a shipping quote. It is an entirely homemade novelty craft project from my workbench. Obviously, it is a novelty item meant for entertainment only, and since it is homemade, user discretion is strongly advised.Nixie clock instructions

At startup the nixie tubes display all 1's (11:11:11) or 3's (X3:33:33)

Ones indicate that manual time set is enabled, threes indicate that gps / wifi is enabled for automatic time and date display.

To select, press slow set button for the ones (manual set) and press fast set for the threes (gps / wifi set)

11:11:11 = time set using buttons (manually) X3:33:33 = gps / wif sets time (automatically)

During this period, the time zone can be set / changed by pressing "toggle" button

Press toggle button once to enter time zone select mode.

The display will indicate XX:XX:00

Press fast set to increment through each zone; please refer to the time zone list to select the number for your time zone.

When the correct number is displayed, press slow set twice.

The display will change to twos (22:22:22) or zeroes (00:00:00)

To enable the date display, press fast set and the display will indicate all 2's (22:22:22)

To disable the date display press slow set and the display will indicate zeroes (00:00:00)

The display should read X1:11:XX for 60 HZ, or X0:00:XX for 50 HZ.

If this doesn't match the proper frequency, unplug the clock and wait a few minutes and plug it back in, wait for the cycle to display the frequency, and verify it is the correct setting.

1:11 = 60 HZ (USA and some others) 0:00 = 50 HZ (most other countries)

Finally, the display cycles to :12 indicating 12 hour format.

Default is 12 hour format. To select other formats, press fast set once and the display will indicate :24, this is 24 hour format without leading zero.

Press fast set again to cycle through the other choices, which are :02 (12 hour format with leading zero) and :04 (24 hour format with leading zero)

:12 = 12 hour format, no leading zero. :24 = 24 hour format, no leading zero. :02 = 12 hour format, leading zero. :04 = 24 hour format, leading zero.

When your selection is made, simply wait several seconds for the display to cycle to run mode.

While the firmware is acquiring the time / date from the gps or wifi module, the display will indicate alternating between threes (X3:33:33) and fives (X5:55:55)

Press Fast set & Slow set simultaneously to refresh the time.

During run mode you can set up on /off preset times. Press slow set + toggle to enter sleep/wake times mode. Press fast set until the "on" time desired is shown. Press slow set to move to the next screen, and press fast set again to increment to the desired "off" time Press slow set once more to re-enter run mode.

To erase these times, go through the same routine, but press toggle button once after each selection, before pressing slow set, for four times, and when the clock returns to run mode, the saved times will be erased.

During run mode you can also set DST to on or off. Press fast set & toggle simultaneously. The tubes will display all "0"'s or all "1"'s Press fast set once to change the display. All "0"'s = DST ON (time will set back one hour, as in Fall) All "1"'s = DST OFF(time will be back to normal, as in Spring) When the desired mode is selected, press toggle once to re-enter run mode and save setting.

Time zones

01 = EST 02 = CST 03 = MST 04 = PST 05 = AKST 06 = HAST 07 = BST 08 = CEST 09 = MSK 10 = PHT 11 = ACST 12 = Asia/Seoul 13 = SGT 14 = IST