Radio connection receiver for the FV2 system with potential-free 10A change-over contact. In conjunction with the battery driven magnetic contact transmitter FV2 SM, it is thus possible, for example, to implement the supply air monitoring (frequently required for enclosed rooms when operating exhaust fans) with little effort.

 

With the FV2 EL, the additional switching logic functions (OR, NOR, AND, NAND) enable simultaneous evaluation of up to 4 transmitters.