Beam IsatDock DRIVE User Manual page 19

Horn Alert Output (If required)
The IsatDock DRIVE provides a BLUE wire
output on the rear cable loom for controlling
an external ringer such as a vehicle horn. The
horn output is an open collector output capable
of sinking up to 120mA current. It CANNOT be
connected to the vehicle horn directly and an
automotive grade relay must be used to control
the horn as shown below.
coil
HORN OUTPUT
By default, it only works when the key ignition
is OFF and the IsatDock DRIVE is still ON (by
default, the IsatDock DRIVE will stay on for
20 minutes after the key ignition is turned
OFF). This is to avoid the horn buzzing on an
incoming call while the vehicle is being driven.
NC
C
NO
RELAY
HORN
IsatDock DRIVE - Installation & User Manual
12V / 24V
Battery
Radio Mute Feature
The entertainment mute output connects to
the mute input on your car radio, if the radio
includes a mute fuction. The entertainment
mute feature automatically mutes the radio
system when you place or receive a call. This
feature needs to be supproted by a car radio
that supports in functionality.
NOTE
This output signal from the "Mute" connector sinks a
maximum of 100mA (0.1A) to ground
19