After applying the power supply to the module the LED will blink at three different ratios, which shows three different statuses of your cellular network. On the topmost right corner side of the SIM800L Module, we can see an LED that indicates the status of your cellular network. It has a tiny size of 17.6*15.7*2.3mm which makes it a good choice for embedding into projects without a lot of space. This chip supports a baud rate from 1200bps to 115200bps with Auto-Baud detection. The operating voltage of this chip is from 3.4V to 4.4V which makes it ideal to operate by a LiPo battery supply. SIM800L supports Quad-band frequency its works on frequencies 850MHz, 900MHz, 1800MHz, and 1900MHz, it can transmit and receive voice, SMS, and data information with low power consumption. This is a Quad-band SIM800L GSM/GPRS cellular chip from SimCom in SMT type. On the top surface of the GSM module, we can see a chip is mounted on the module board. ![]() SIM800L GSMGPRS Module Hardware Overview SIM800L GSM cellular chip ![]() ![]() These key components are SIM800L GSM cellular chip, LED Status Indicators, Antennas, and Micro-SIM socket. The SIM800L GSM/GPRS module consists of four key components, which take important roles in the work of the module. ![]() SIM800L GSM/GPRS Module Hardware Overview
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