Feature Highlights: 1. Ready-to-Use Design – Built with an STM8S005 main control chip and pre-loaded firmware. Just weld the light tube and it’s ready to go. 2. Vivid Color Options – Supports seven clock face colors (including RGB). Added USB power interface for more convenient operation. 3. High Precision Timekeeping – Uses an imported high-accuracy clock chip with less than 1 minute of error per year. 4. Stable & Reliable Display – Integrated IC drive program ensures steady, flicker-free performance. 5. Practical Functions – 24-hour mode, clear time display, anti-ghosting program (refreshes every 10 minutes). No alarm, remote control, or timer switching included. Product Details: This IN14 Nixie Tube Clock Module is designed for easy DIY assembly and reliable use. It features a pre-programmed STM8S005 controller, a high-precision clock chip for accurate timekeeping, and a stable IC-driven display. The USB power input makes it convenient to power, while the anti-ghosting refresh keeps the digits clear. Ideal for electronics enthusiasts looking to build a retro-style digital clock. Specifications: - Product Name: IN14 Digital Clock Module Board - Condition: 100% Brand New - Material: PCB - Color: Blue - Quantity: 1 PC - Input Voltage: 11V–13V DC, 1A (5.5×2.1mm plug) - Backup Power: 1×CR1220 Button Battery (Not Included) - Weight: Approx. 40g - Size: Approx. 187×48mm / 7.36×1.89inch How to Use: - Set Time: Press "SET" to enter time setting mode. Use "Up" and "Down" to adjust, then press "SET" to confirm. - 12/24 Hour Mode: Press "Up" to switch. - Sleep Mode: Long press "SET" until display turns off to enable sleep mode (display off from 22:00 to 07:00, on from 07:00 to 22:00). Display all "0" to exit sleep mode. - Set Refresh Time: Long press "UP", then press "UP" or "Down" to set refresh interval (1–9 minutes). - Set Back Color: Press "Down" to change color. If colors cycle automatically, it’s in daily color-change mode; otherwise, the color stays fixed.