Libelium Smart Cities PRO Technical Manual page 45

Sensors
To connect the Sound Level Sensor probe to the enclosure, It should be taken into account that the sensor probe
connector has only one matching position. The user should align the sensor probe connector looking at the little
notch of the connector (see image below). Notice that the sensor connector is male-type and the enclosure sensor
connector is female-type.
Figure: Detail of the sensor probe connector
Besides, there is a locking nut which should be screwed till the connector is completely fixed to the enclosure.
Figure: Connecting the sensor probe to the enclosure
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