The Krontek KT3000 Master Clock is provided in two models, both products have a temperature compensated crystal oscillator (TCXO) as their time base. The model KT3000GPS includes a GPS module that provides millisecond accuracy and automatic time setting. The KT3000 will also operate as a clock code format converter. That is - it can receive and synchronise itself to one type of time correction format and transmit in another.