LED Digital Clock

6-digit LED digital clock master features: Bulk of clocks networking available for synchronization (Max 128 clocks) Red, Green, Blue, Orange LED displays available for options Inside backup battery is able to keep time accurate when outside power failsNormal Specifications: Daily errors: less than 2 seconds Time format options: 12/24 hour format Power supply: DC 12 18 V, 2A Ambient Temperature: -10 50 C; 0 95% relative humidity; Communication distance: 1000m (for synchronization) Two holes in spacing of 12 inches for wall mounting Overall dimensions: 670*160*50mm Power consumption: less than 4 Watt; Net weight: 2.5Kg;