CSS TimeMachines designs and manufactures precision digital clocks and SNTP Servers. Ethernet clocks, legal time clocks, 24 Hour clocks, military time clocks, school clocks, airport clocks, network clocks, and large display LED clocks with 2.5 and 4 inch digits. They are powered by existing Ethernet network wiring using Power over Ethernet (PoE). They automatically set themselves and update using SNTP over TCP/IP networks and the internet. The resulting time is accurate to within milliseconds when compared to atomic, GPS, or other very accurate time sources. Multple clocks can be used to create a "command room" showing mulitple time zones. The products are manufactured in Nebraska USA.
POE Clock Documentation:
WiFi Clock Documentation:
TM1000A Time Server Documentation:
Firmware Update Downloads: