The Steca TR 0704 system controller is a universal controller for solar energy and heating systems. In addition to a selection of pre-programmed basic systems, freely programmable individual system configurations can also be realised.

The standard Steca TR 0704 has three calorimeters and one hours-of-operation logger for each of the four controller outputs.

The Steca TR 0603mc solar thermal controller unites the features of the already successful Steca TR 0502 and TR 0603 temperature differencecontrollers.

As a particular highlight, the Steca TR 0603mc stores the system'soperational data on a SD card.The 40 pre-programmed systems andnumerous additional functions allow universal use of the controller.

This controller provides everything to operate your solar thermal system safely over a long service life. The Steca TR 0603 controller monitors and controls solar thermal systems with two differently oriented collector arrays and a maximum of two domestic hot water or buffer storage tanks.

The Steca TR 0301 was the first controller on the market to be equipped with a graphic display, on which an animated solar circuit of a solar energy system fully indicates the operating status of the system.

The SC version includes speed control of the solar circuit pump.