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User Guide | COMFORT SERENITY MQTT | NB-IoT / LTE-Cat-M1
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The red LED flashes every 60 seconds for 500 ms if the product's battery level is
low.
User Information through the NFC IoT Configurator application:
📱
Go to the "DIAGNOSTIC" section of the
sensor to check the battery status as "OK"
or "LOW
1.8.3 Changing the double battery pack
When the low battery indicator is activated, it is possible to change the internal
battery pack of the enclosure.
It is important to use the same battery reference, namely ER18505-2.
PROCEDURE FOR CHANGING THE DOUBLE BATTERY PACK:
1. Insert a flathead screwdriver tilted towards the front of the enclosure into the
opening at the top and press. The enclosure will open in two and the front panel
will detach.