Alarm signal siren, function - GF80.50-P-4110-04Q

The acoustic alarm is checked and output by the alarm signal horn with additional battery (H3/1) itself. The alarm request is transmitted by the rear SAM control unit with fuse and relay module (N10/2).

The type and duration of the alarm is programmed country-specifically and stored in the alarm signal horn with additional battery (H3/1).

Automatic alarm actuation 

If the alarm signal horn with additional battery (H3/1) detects loss of the power supply or the communication, it outputs an acoustic alarm automatically.

The alarm is not triggered in the event of a "normal" voltage drop by the vehicle battery (e.g. exterior illumination remained switched on).