The zencontrol emergency wifi devices use data every time they communicate to the cloud.
By default the devices connection interval is set to Responsive, however this can be changed later to either Responsive, Balanced or Low Data.
Responsive connects regularly, Balance connects daily and Low data connects weekly (these times may change).
Each connection will consume 45k bytes, which includes the data in both directions.
|Connection Interval||Monthly Usage*|
|Low Data||0.2 MB|
* Data usage is per device and is approximate value which may vary.