The PCTC2001 Temperature Controller can be optionally programmed to perform two heating modules. Firstly, it can be simply operated like a PCTC1001 Temperature Controller. In this module, it is grouped with both CH-16 Cubic Heater and TP-18 Temperature Platform to heat up a perfusion buffer and maintain the expected temperature at a desired level in a working chamber. Secondly, it can act like two PCTC1001 Temperature Controllers to heat up two independent solution lines. This function is fundamentally useful for researchers to perform a complicated experiment when more than one solution line is required.