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SimCom SIM900 User Manual

SimCom SIM900
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9. NetworkIndicatorLED:NetworkStatusIndicatorLED.
State SIM900function
Off SIM900isnotrunning
64msOn/800msOff SIM900doesnotfindthenetwork
64msOn/3000msOff SIM900findthenetwork
64msOn/300msOff GPRScommunication
10. ADCandPWMPins:ADCandPWMPinsofSIM900A.(Referpage9,10forADCandPWM
commands)
11. AudioInterface:AudioPins(Speakerandmicrophonepins)ofSIM900/900A.
12. SIMInterface:SIMCardholderInterface.
13. Vout:Regulated4.2Voutputvoltageforexternalapplicationcircuit.
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SimCom SIM900 Specifications

General IconGeneral
BrandSimCom
ModelSIM900
CategoryModem
LanguageEnglish