Specifications:

• 2.3"/ 4"/ 6”/ 7”/ 8” / 12” height digits, color red,
  7-segment bright LED display
• Display of hour and minute with accurate real time clock and battery back up for the time keeping
• Several units (up to 128) can be linked and synchronized together (optional)
• Durable aluminum frame with black powder coating
• Accepts customization according to your needs