Efento SP. J.
Ul.Krupnicza 14/5
31-123 Kraków
Measureme
nt interval
[min]
Transmissi
on interval
[min]
ACK period
(every N
messages)
Bluetooth
interface
Battery lifetime [years]**
Data usage
(up + down)*
ECL = 0
ECL = 1
ECL = 2
15
60
24
OFF
11
7.5
5
106 kB
ON
6.2
4.6
3.5
3
30
12
OFF
6
3.7
2.5
252 kB
ON
4.1
2.8
2
3
180
8
OFF
11
11
9
90 kB
ON
8
6.3
5.1
5
60
1
OFF
3.1
1.9
1.2
182 kB
ON
2.5
1.7
1.1
5
60
24
OFF
6.2
4.7
3.6
130 kB
ON
6.2
4.7
3.6
* Table above presents maximum uplink data usage.
● Due to a compression algorithm, real data uplink data may be up to 25% lower compared to the
values from the table above
● Downlink data does not take into the account configuration changes sent to the sensor from the
server and FOTA updates
** Battery consumption is indicative. Battery lifetime is affected by many factors including:
● temperature, in which the device operates
● signal conditions
● type of sensors installed in the device
● number of BLE connections (i.e. to download the data from devcie's memory)
● number of user / threshold triggered transmissions
● number of new configurations sent from the server to the sensor
● number of network registrations (if device changes its location, resets, there are some network
issues, device needs to register to the network again what consumes a lot of battery)
● number of FOTA updates (not included in the model)
● complex physics of Li-ion batteries (in the model a simplified calculation is used). Due to physical
processes which happen in the battery, maximum battery life time is 11 years. After that time, the
battery will discharge, even if it is not used
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