3 inputs, 1 output temperature difference controller

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.
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3 inputs, 1 output temperature difference controller with pump speed controll

The Steca TR 0301sc controller is the speed-controllable version of the basic controller, the Steca TR 0301.
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6 inputs, 3 outputs temperature difference 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.
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6 inputs, 3 outputs temperature difference controller

As a particular highlight, the Steca TR 0603mc stores the system's operational data on a SD card. The 40 pre-programmed systems and numerous additional functions allow universal use of the controller.
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7 inputs, 4 outputs temperature difference controller

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.
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