IN12 IN14 Nixie Glow Clock Module 6 Bit Digital Tube Circuit Board 12/24 Hour Switching Item Type: Digital Tube Clock Module Input Voltage: 5V 2A Battery: 1 x CR927 Battery (not included) Function: Time Backlight Color (multiple color switching) 12/24 Hour Module Sleep Module (22:00-07:59 No Display, 08:00-21:59 Display) can be set to turn on or off Refresh Time Setting (1-9 minutes), auto save settings Set Time: Click Set to enter time setting. Click Up or Down to set time, then click Set to confirm. 12/24 Hour Module: Click Up to switch Sleep Module: Long press Set without display, enters sleep mode (22:00-07:00 No Display, 07:00-22:00 Display). Display all 0 digits in sleep mode. Set Refresh Time: Long press UP, then click UP or Down. Refresh can be set to 1-9 minutes (Click Set to change LED brightness of 1-5). Set Backlight Color: Click Down to change color. When color changes, it will automatically change color (changes color each day) or fixed color.