The Krontek KT4000 Master Clock combines the functionality of a clock and signal controller and can be programmed via the Ethernet or LCD user interface. The KT4000 can drive a clock load of up to 2 amps at 24VDC. For example: it can directly support 100 Krontek Syncroline SL300 analogue clocks. The KT4000 has 4 control circuits that can be programmed from any PC on the network via telnet or using the front control panel. The output relays may also be manually controlled via the network or front panel. Network pass code protection is provided to prevent unauthorized access.