The Krontek KT2010 Signal Controller is a Programmable Controller with an auto sensing 10/100Mbit Ethernet Interface. It provides two output control relays and two programmable control inputs. Circuit 2 may be configured to function as a master clock control to synchronize analogue or digital slave clocks to network time. The Controller derives its time from the network via an SNTP Server. SNTP time can be sourced from the Internet or from timeservers such as the Krontek KT2000 GPS Timeserver.