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SIM800C GSM GPRS Module Support 3.3/5V TTL Level Control DC 6-24V for Arduino 51 MCU

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Product Introduction:

1.TTL level control interface, can directly access the SCM serial port 5v/3.3v level logic, or usb to ttl module computer debugging;
2.The logic level conversion circuit(important), convert the ttl level automatically to 2.8v level which the kernel needs; 
3.Microphone and headphone jack, used to test voice call function;
4.TTL level and RS232 serial port control switch short-circuit cap;
5.RS232 serial interface, you can connect with the serial port line and computer communication debugging;
6.MAX3232 serial port conversion circuit;
7.Vbat power interface, DC-DC stabilivolt output interface;
8.DC power adapter input interface, recommended to use 9v or 12v power input (at least 1A). 
Because the GSM module instant power consumption can be up to 2A @ 4v;
9.Power indicator light;
10.Power switch;
11.RTC battery;
12.SIM800C kernel(quad-band GSM);
13.SIM card socket;
14.Signal indicator light;
15.ESD protection chip;
16.Key switch to start the module;
17.Pin for SIM800C core outside expansion;
18.SMA interface antenna;
19.DC-DC switching power supply regulator;
20.Bluetooth antenna interface IPEX

Basic Functions:

1.DC 6-24V power supply voltage:TVS protection,which will greatly enhance board's stability
2.Support 3.3V/5V TTL level control,easy to communicate with various MCU,such as ARDUINO/51/STM32
3.Standard serial port interface,easy to be ccontrolled by PC or debugging
4.Earphone and microphone interface,convenient to test GSM voice communication
5.SIM card electrostatic protection chip
6.All available SIM800C pin lead out,easy to develop various SIM800C applications
7.RTC backup battery
8.NET_STA indicator lamp,easy to know SIM800C current state
9.Board Size: 83*54mm

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SIM800C GSM GPRS Module Support 3.3/5V TTL Level Control DC 6-24V for Arduino 51 MCU