Efento SP. J.
Ul.Krupnicza 14/5
31-123 Kraków
In order to save energy, the logger remains in power saving mode most of the time. Communication
with the server is initiated by the logger only for the purpose of sending data and (possibly)
receiving a new configuration from the server.
LEDs
NB-IoT logger is equipped with two LEDs: green and red. If the device is on and works properly
(device is in the Power Saving Mode), both LEDs are turned off all the time. Flashing of the diodes
indicates the current status of the device or the action being performed by it. The LEDs are placed
at the edge of the PCB and are visible through the cuts on the side of the logger housing. LEDs
flashing indicate:
● Single blink of the red LED once every 15 seconds - problems with registering on the
network
● Double blinking of the red LED - communication problem / no coverage (the has registered
on the network). Retransmission mechanism is started: 1st retransmission after 15 minutes,
2nd after 30 minutes, 3rd after 1 hour, 4th after 2 hours, and then every 3 hours
● Two blinks of the green LED - the device has taken a measurement
● Fast blinking of the green LED - Transmission mode - data is sent over the NB-IoT network
● Red and green LEDs blink five times - Device starts up
● Fast blinking of the red LED - Device clears its internal memory (you can see it on the initial
configuration of the device or when changing the measurement interval)
Getting started
SIM card
Efento NB-IoT loggers are available in two options: with a plastic SIM card (micro SIM / 3FF) or an
embedded SIM (on request). The SIM card must support NB-IoT.
If your device has an embedded SIM, you do not need to insert a SIM card. Logger will register on a
network as soon as you power it up.
Micro SIM card holder is placed on the PCB. In order to insert the SIM card you need to open the device
enclosure.
Battery
By default the logger comes with a battery pack 3.6V 4200 mAh.
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