Autronica BN-304 Input/Output Unit

The Autronica BN-304 Input/Output Unit is a interactive device to connect and to control external devices in interactive fire alarm systems. The Autronica BN-304 also includes the SelfVerify function. This function ensures the highest grade of reliability and reduces the need for manual testing because the panel is able to continuously and automatically check all units that include this function.


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For interfacing and controlling external units to
Autronica’s interactive fire detection systems
Multi function unit: function selected by switch setting
Input/Output signals
1A 30 VDC dry relay contact for the output ports
Includes the SelfVerify function for reduced
maintenance/testing and increased reliability on the input for critical alarm functions
Short-circuit isolator in each unit
Automatic addressing
Proven technology
Wall mounted
Designed to meet the requirement of the major maritime classification societies
Approved according to EN-54-17, EN 54-18.
The Autronica BN-304 Input/Output Unit.