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Several MANHOLE devices installed in the field communicate through NB-IoT network to the cloud, where all messages and data are collected. The User application will be able to use informations collected to recognize devices status, events and to schedule maintenance. Operator will follow specific procedure for Initial set up and Battery change, or Parameter update using a mobile device connected to the device via BLE and or NFC.


The on board will provide the following functions:


● Easy setup and maintenance

● Events identification:

    ○ Manhole cover open

    ○ Manhole flooded / unflooded

    ○ Diagnostic data (e.g. battery level, temperature, …)


● Sending message to cloud

    ○ Normal condition message (on regular basis)

    ○ Alert message (on event)



Technical Parameter:


Transmitting Mode


Battery Life

One year ( 20 messages a day)

Standby current


 Working current


Low voltage threshold


Transmit power

≤13dBm ( 868 MHz )

Working temperature


Water level detection range

0-4 m

Detection angle



95 x 33 x 171