EBV Dual differential temperature controller CETA 101

Dual differential temperature controller for controlling heating and solar systems with two heat sources and one hot-water storage tank. If the temperature of a heat source exceeds the temperature at the storage tank by the value set on the controller, it automatically switches on the circulation pump and transfers the heat taken up in the heat source to the storage tank. 
The CETA differential temperature controller provides three relay outputs, four sensor inputs and a clear LCD display, and is suitable for wall or DIN-rail mounting; the system can be extended via data bus to include up to four controllers, and heat balancing is possible using an optional return sensor.

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