The Autronica BN-320/LLL is a low location lights unit that is designed for use in maritime applications. The output of the BN-320/LLL is used to activate and deactivate the external low location lights unit. One input is used to monitor the unit's status (ON/OFF), while the other input is used for fault monitoring. The BN-320/LLL has been designed for use with the AutroSafe Fire Alarm System and comprises the SelfVerify function. This function ensures that the BN-320/LLL has the highest grade of reliability and reduces the need for manual testing, because all units comprising this function are automatically checked once every 24 hours.