Patent ID: 8544818

Claim:
An electronic adapter configured to control a bistable valve for a liquid or gaseous media, the valve having a first and a second stable switching state, wherein in the first switching state a first switch voltage is applied with a first polarity for at least a switch time period to electric terminals of the valve thereby causing the valve to change to a second switching state and wherein in the second switching state a second switch voltage is applied with an opposite second polarity for at least the switch time period to thereby cause the valve to change from the second switching state to the first switching state, the electronic adapter comprising: only one input connectable to a control unit; and an output connectable to the electric terminals, wherein the adapter is configured to output the first switch voltage with the first polarity for at least the switch time period upon detection of a first signal event at the input, and wherein the adapter is configured to output the second switch voltage with the second polarity for at least the switch time period upon detection of a second signal event at the input, and wherein an energy store is provided for switching the valve into a defined state in case of a power failure.