2
Accessories
The unit can be equipped with the following accessories:
n
GSM module
2.1 GSM module
The GSM module is used to forward alarm messages to a mobile
or fixed-line telephone network via text message.
To operate the GSM module you need a SIM card
(not supplied).
A GSM module can manage up to three units. You can use the
supplied software to adjust the alarm limits (upper and lower
warning limit). You need a temperature sensor to do so (not sup-
plied).
The GSM module has three inputs:
n
Two inputs for the potential-free contact
n
One input for the optional temperature sensor
Alarm messages are forwarded to the GSM module via the poten-
tial-free contact (connection for remote warning system). When the
alarm limits are reached, an optical and acoustic signal is triggered
on the GSM module and an alarm text message is sent.
The acoustic alarm is acknowledged by sending a confirmation text
message to the GSM module or by pressing a button on the GSM
module. The optical alarm remains until the fault has been rectified
and also acknowledged.
Units without a potential-free contact can be retrofitted with a tem-
perature sensor.
Fig. 8: GSM module
Accessories
GSM module
26.05.2021
Refrigerator/freezer BL series
21
