Victron energy Battery Protect 40 Gebrauchsanweisung Seite 4

There is a possibility to connect a switch to the BP's OFF connection. If the OFF connection is connected to the Minus, the BP will shut down the
connected equipment after about 1 second. If the connection is removed, the equipment will be started up again after about 1 second. The current
through the switch is very low, so a small switch can be used.
Alarm-output
A buzzer can be connected to the alarm-output. The buzzer/alarm will be activated in case of under voltage after about 12 seconds. When there is no
change in this situation the BP will shut down the equipment about 90 seconds later. The buzzer/alarm will also be stopped. Because at overvoltage
(16V/32V) the equipment can be damaged, the BP will shut down the equipment immediately and the alarm-output will pulsate. This way you can hear
the difference between an under voltage and an over voltage alarm. A second application of this output is with the use of a relay. In this application the
BP should be programmed in program-position 12 (default is position 11) . This way the relay will be activated at alarm and when it reaches the upper
voltage threshold it will be deactivated again. This way the relay can be used to activate a charger or generator.