Pyramid TimeTrax syncronized clock uses power over the ethernet infastructure . A 4" 6 digit red LED clock . Designed to work with the ethernet and the Pyramid Timetrax software . Displays Hours,minutes and seconds viewable up to 100 feet away, black bezel with red digits . Pyramid Timetrax software required (42547) for operation . Military Time capable . Clock face is tinted to reduce glare . Bright red LED (4 inch, 6 digit) . Modern styling gives your facility a high-tech look . Durable ABS frame and shatterproof polycarbonate lens . Extremely rigid body construction designed for durability and long life . Dual-sided clock mount available with wall or ceiling brackets (bracket not included) . Automatically adjusts for Daylight Saving Time and resets if power failure occurs . Made in USA The all new TT Sync PoE Clock Systems unite synchronized time keeping with the convenience of cost-effective Power over Ethernet. Power over Ethernet digital clocks enable customers to enjoy the benefits of a synchronized clock system without the added cost and maintenance of a master clock or wireless transmitter. This allows customers to scale their installation anywhere from one clock to hundreds of clocks economically. By leveraging existing network wiring, you may enjoy the benefits of a synchronized clock system with significantly reducing installation costs. For large installation units can be shipped pre-configured to specific customer specifications, customers need only plug the clock in. Alternatively customers can use the provided desktop application to customize IP settings, time zones and even custom DST rules.