Do you want to operate light, door opener or burglar alarm system at the same time as pressing a (bell) button? Then the a/b switching module is the right choice. Up to six of these switching modules can be used on a TFS-Dialog 200/300/400 or TFS-Universal plus - all that is required is a two-wire cable.
The a/b switching module triggers the switching operation when a button is pressed. Each button can control one or more switching modules. The assignment can be freely selected.
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