Features:
* Features 7 customizable RGB LED backlight colors at the base, allowing you to tailor your clock's glow to your unique preference (backlight color applies to the bottom, not the digital display).
* Integrated timing IC ensures precision timekeeping, suitable for various settings.
* 12/24 hour display mode for flexible time format selection. Refreshes time display every 5 minutes for reliable accuracy—no alarm function included.
* Supports continuous updates and improvements; product appearance may vary—refer to actual item.
* Classic IN14 Nixie tube aesthetics blend a retro touch with creative DIY assembly—engage in an enjoyable build experience.
* Note: IN14 tubes are not included; this kit contains only electronic components and a matching acrylic shell that fits our design. Please prepare 6 IN14 tubes separately.

Specifications:
Part Name: DIY Nixie Tube Clock Assembly Board
Material: PCB Circuit Board
Input Voltage: DC12V
PCB Dimensions: 187x48mm
Color: As shown in images
Function:
1. Time display
2. RGB color backlight (7 selectable bottom colors)
3. Switchable 12/24 hour format
4. Sleep module (screen off from 22:00 to 07:00, on from 07:00 to 22:00 for energy efficiency and quiet ambiance)
5. Refresh time interval setting (adjustable from 1 to 9 minutes)
Operation:
1. Time Setting: Press “SET” to enter time setting mode. Use “Up” and “Down” to adjust hour/minute, then press “SET” again to confirm.
2. 12/24 Hour Format: Press “Up” to between 12 and 24 hour display.
3. Sleep Module: Long press “SET” to enable/disable sleep mode. During sleep, no digits are displayed (22:00-07:00); display resumes at 07:00.
4. Display Refresh Timing: Long press “UP,” then select interval with “Up” or “Down” (1–9 minutes).
5. Backlight Color Selection: Press “Down” to cycle through available colors. If set to auto, color changes daily; otherwise, color remains fixed.
Assembly Note: The white pin of each Nixie tube must be soldered to the matching white pin on the PCB.
Description: All parts require self-assembly. IN14 tubes NOT included; please source 6 tubes.

Package Contents:
1 x PCB Circuit Board
1 x Acrylic Shell
4 x Screws
3 x Key Buttons
4 x Neon Lamps
2 x Glass Tubes
6 x Copper Rings