GEM 4242 Operating Instructions Manual page 24

13 Operation
Using an integrated Bluetooth Low Energy interface, the fol-
lowing functions can be used in conjunction with the GEMÜ
app:
1. Changing the device configuration (parameter settings).
2. Reading out the current device status.
3. Display and evaluation of historic events.
4. Implementation of the initialization.
5. Moving the valve in manual mode.
6. Resetting the device to the default settings.
7. Activating the localization (device detection).
8. Security management (blocking access for a certain group
of participants).
▶ Only one end device can ever be simultaneously connec-
ted to the product. For additional participants, this device
is not visible during this period.
After starting the app, all compatible GEMÜ products within
range are displayed in the connection list. The product that is
to be connected can be referenced via the Bluetooth name. In
the condition as supplied to the customer, this corresponds to
the last four digits of the serial number printed on the digital
product label (QR code). The Bluetooth name can optionally
be changed at any time after the connection is established
(maximum 16 characters).
Safety notice!
▶ The wireless interface can be activated
in the condition as supplied to cus-
tomer, depending on the order version,
and is ready for connection immedi-
ately after the product has been elec-
trically commissioned.
In the condition as supplied to the customer, the product is
protected against unauthorized access via a unique connec-
tion password. The password corresponds to the digital
product label (QR code) that is affixed to the product. To enter
the password, this can optionally be read via the camera scan
function on the smartphone/tablet or entered manually. The
password can be managed independently and set to any other
password. By amending the original password, you lose the
option to read this via the digital product label. The connec-
tion password function can be deactivated, but we do not re-
commend this. Furthermore, a configuration lock can be set
up for the product using a separate optional password –
providing the product with additional protection. If this func-
tion is activated, you cannot implement any changes to the
settings without first entering the password (read-only mode).
There is an option to reset both passwords if you forget
these. The user can define whether one, both or none of the
passwords can be reset via the reset mechanism.
Caution! If you forget your passwords and one or both pass-
words for the reset mechanism are disabled, the product can
only be unlocked by GEMÜ.
GEMÜ 4242
NOTICE
NOTICE
Caution! If one or both passwords for the reset mechanism
are enabled, anyone with access to the digital product label
(QR code) can remove the password protection.
Reset mechanism:
There are two options for resetting one of the two passwords
(connection or configuration lock password). Both passwords
can/must be reset separately from each other.
9. Digital product label (QR code):
ð By scanning the QR code that is affixed to the product.
10. RFID (optional if integrated)
ð The optional RFID chip that is integrated into the hous-
ing can be read out by additional hardware (Conexo
Pen) that is available separately, and this can be used
to reset the passwords.
▶ A setting parameter can be used to block the reset of one
or both passwords.
13.2 Basic operation of the app
The GEMÜ app consists of several function modules that can
be called up via the bottom navigation at the bottom of the
display. The functions for operating the product are located in
the "Connect" area. The figure above gives a rough overview
of the structure. By selecting the tabs "Overview", "Settings" or
"Status", it is possible to navigate within the "Connect" area.
Important information, error or warning messages can be
called up on all pages via the bell symbol.
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NOTICE
Messages Information, error and warning
messages
Settings
Parameter display
Parameter configuration
Search function
Choice of favourites
Operating mode settings
Status Operating time display
Bar chart
Status display
Overview Actions (initialization,
localization, maintenance)
Favourites
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