All METTLER TOLEDO pure water transmitters feature Transmitter Configuration Tool (TCT) software that diminishes the typically complex, time-consuming and frustrating process of configuring multiple transmitters. TCT is a PC-based program that allows users to efficiently pre-configure a transmitter on their PC or laptop and within seconds upload that file to multiple transmitters. Users can also configure transmitters at the transmitter itself, or at a desktop outside the work environment by using the provided USB port.