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HIGH
LOW
Figure 22: Behaviors of RI When a URC or SMS Message is Received
3.12. Network Status Indication
The NETLIGHT signal can be used to indicate the network status of the module. The following table
illustrates the module status indicated by NETLIGHT.
Table 16: Module Status Indicated by NETLIGHT
NETLIGHT Level
Always Low (LED OFF)
64ms High (LED ON)/800ms Low (LED OFF)
64ms High (LED ON)/2000ms Low (LED OFF)
BC66-NA_Hardware_Design
RI
idle
A UR C or SMS me ssage is received
Module Status
The module is not working or in Deep Sleep mode
Network searching
Network connected
Module
NETLIGHT
Figure 23: Reference Design of NETLIGHT
BC66-NA Hardware Design
Output data
120ms
VBAT
2.2K
4.7K
47K
NB-IoT Module Series
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