Smart Machine Smart Decision
SIM800H _Hardware Design_V2.03
45
2016-10-10
Table 28: Buzzer characteristics
Parameter
Min
Typ
Max
Unit
Working voltage
2.5
2.8
2.9
V
Working current
16
mA
Note: PWM pin must be kept at low power level when module is in the power on procedure.
4.15.
Network Status Indication
Table 29: Pin definition of the NETLIGHT
The NETLIGHT pin can be used to drive a network status indication LED. The status of this pin is listed in
following table:
Table 30: Status of the NETLIGHT pin
Status
SIM800H behavior
Off
SIM800H is not running
64ms On/ 800ms Off
SIM800H not registered the network
64ms On/ 3000ms Off
SIM800H registered to the network
64ms On/ 300ms Off
GPRS communication is established
Reference circuit is recommended in the following figure:
Module
NETLIGHT
VBAT
4.7K
47K
R
Figure 43: Reference circuit of NETLIGHT
4.16.
Operating Status Indication
The pin4 is for operating status indication of the module. The pin output is high when module is powered on,
and output is low when module is powered down.
Pin name
Pin number
Description
NETLIGHT
64
Network Status Indication
SIMCOM
CONFIDENTIAL
FILE