Quectel M12 User Manual

M12 Hardware Design
M12_Hardware_Design_V3.3 - 57 -
HIGH
LOW
RI
120ms
Idle or talking
URC or
SMS received
Figure 40: RI behaviour of URC or SMS received
3.13. Network status indication
The NETLIGHT signal can be used to drive a network status indicator LED. The working state of
this pin is listed in Table 19.
Table 19: Working state of the NETLIGHT
State
Module function
Off
The module is not running.
64ms On/ 800ms Off
The module is not synchronized with network.
64ms On/ 2000ms Off
The module is synchronized with network.
64ms On/ 600ms Off
GPRS data transmission is ongoing.
A reference circuit is shown in the following figure.
Module
NETLIGHT
4.7K
47K
300R
VBAT
Figure 41: Reference circuit of the NETLIGHT
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Quectel M12 Specifications

General

Brand	Quectel
Model	M12
Category	Control Unit
Language	English