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It will be confirmed on the
display whether a connec-
tion has successfully been
established to the remote
control or the laser receiver. If the attempt to
establish a connection to the remote control
is successful, the status indicators (34) and
(35) on the remote control will light up green
for three seconds.
If no connection could be
established, an error mes-
sage will appear on the dis-
play. If the attempt to es-
tablish a connection to the remote control has
failed, the status indicators (34) and (35) on
the remote control will light up red for three
seconds.
Two laser receivers can be connected to and
work with the laser level at the same time.
If other remote controls or laser receivers are
connected, the oldest connection will then be
deleted.
Remote control via the Bosch Leveling
Remote App
The laser level is equipped with a Bluetooth®
module which uses radio technology to en-
able remote control via a smartphone with a
Bluetooth® interface.
The Bosch Leveling Remote App application
(app) is required to use this function. You can
download this in the app store for your ter-
minal device (Apple App Store, Google Play
Store).
Information about the system requirements
for a Bluetooth® connection can be found on
the Bosch website at www.bosch-pt.com
When remote controlling via Bluetooth®, poor
reception conditions can cause time delays
between the mobile terminal device and the
laser level.
Do not turn on laser re-
motely using the Bosch
app without line of sight to the laser tool.
The sudden bright laser beam may increase
the risk of personal injury or property dam-
age.
Ensure there are no bystanders in the direct
path of the laser beam before turning on the
laser remotely.
GRL4000-90CHVG 10-21.indd 21
To switch off Bluetooth® to con-
trol remotely via the app, press
the Bluetooth® button (7). The in-
dicator for a terminated connec-
tion will appear on the display and the Blue-
tooth® connection indicator (b) on the
standard screen will go out.
The
switched on by default. To switch
back on Bluetooth® to control re-
motely via the app, briefly press
the Bluetooth® button (7). The indicator for
establishing a connection to the smartphone
will appear on the display. Ensure that the
Bluetooth® interface is activated on your mo-
bile device.
It will be confirmed on the display
whether a connection has suc-
cessfully been established. The
existing connection is visible on
the Bluetooth® connection indicator (b) on
the home screen.
If no connection could be estab-
lished, an error message will ap-
pear on the display.
The connection between mobile end device
and laser level is established after the Bosch
application has started. If multiple active la-
ser levels are found, select the appropriate
laser level. A connection will be established
automatically if only one active laser level is
found.
The Bluetooth® connection may be interrupt-
ed if the distance between the laser level and
the mobile device is too great or is blocked,
and if there are any sources of electromagnet-
ic interference. In this case, another attempt
to establish a connection will automatically
begin.
Sleep mode
During breaks from work, you can set the la-
ser level to sleep mode. All your settings will
still be saved.
To switch on sleep mode, briefly
press the on/off button (11). In
the menu which subsequently ap-
pears the on/off button (11) as
often as required until sleep mode has been
selected. Confirm your selection with
pressing the slope button (14).
-21-
Bluetooth
function
10/20/21 3:23 PM
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