IP PoE Automatic Time Set Analog Clock requires no manual time adjusting. The Time is automatically set utilizing Network Time Protocol (NTP). Automatic Time Set Clock Features: Easy to Install via RJ-45 Connection No Master Clock is required 10/100 BaseT Ethernet Compatible DHCP or Static IP Addressable Power over Ethernet (PoE - IEEE 802.3af) is a method of providing power to a network device using the same Ethernet network cable that delivers data to the device - The advantage to this is being able to power the device without having a separate electrical connection Industrial Grade Metal Housing Simplified User Control for: IP Configuration NTP Server Address Time Zone Offset From UTC Daylight Savings Time Time Display, 12/24 Hour Format Status Reporting Easily Up-Load Firmware Upgrades Available in 12" (VIP-A12) and 16" (VIP-A16) Diameter Dimension