The 2.3" 2U Rack Mounted NTP Digital Clock can display the hour, minute, second. The digits size is 2.3 inches. The LED color is red. It comes with 2U rack-mounted, seamlessly integrating into your existing infrastructure. It receives automatic synchronization of time via NTP server, no need of master clock. It does not support PoE. It's powered by power adapter. The black 2U Rack NTP Clock supports 12 or 24 hour s and Daylight Saving adjustments allows hassle-free synchronization.