Specifications include, but are not limited to: Wireless timekeeping system shall be capable of synchronizing clocks, intercom, and other equipment throughout the 110,000 square foot school building.System shall synchronize all clocks to each other. The system shall utilize GPS or Ethernet technology to provide atomic time to all its components. The system shall not require any hard wiring for operation (besides AC power for specified components) except for an Ethernet patch cable for Ethernet connection or GPS antenna cable to pick up GPS signal. Analog clocks could be battery operated for full portability if required. Clocks shall automatically adjust for Daylight Saving Time per the settings in the system controller.Clocks shall synchronize to + 1 second of the time displayed on the system controller.The system shall include an internal real time clock reference so that failure of the GPS of Ethernet signal does not cause the clocks to fail to indicate the correct time.The system shall incorporate a “fail proof” design so that a temporary power interruption shall not cause the clocks to fail to indicate the correct time. The master system shall include battery backup for 10 to 24 hours.