GSM GPRS modulis SIM800L V2.0

Module with SIM800L:
51, STM32, AVR MCU compatible;
850/900/ 1800/1900 MHz;
Power supply range: voltage is 4.6-5.2v; current is 1A or more (the current is very important);
Operating temperature range: -40 degrees C to +85 C;
Communication interface: The TTL level serial interface compatible with 2.85/3.3/5v MCU
LED indication: NET and RING;
Size:27*39mm;
Connectors:
TTL level serial interface;
power supply interface;
antenna interface;
micro SIMCARD holder;

Description of pins:
5v Power interface: CONNECT TO 5 VDC and GND
VDD, SIM_TXD, SIM_RXD, GND: TTL UART interface The TTL UART serial interface, you can connect the MCU like 51MCU or ARM or MSP430 directly. The pin of VDD is used to match voltage of the TTL.
RST: Reset signal for the module, if this pin is unused, keep open;

Overview of SIM800L chip features:
SIM800 is a complete Quad-band GSM/GPRS solution in a LGA type which can be embedded in the customer applications;
SIM800 support Quad-band 850/900/1800/1900MHz, it can transmit voice, SMS and data information with low power consumption;
With tiny size of 15.8*17.8*2.4 mm, it can fit into slim and compact demands of customer design;
Bluetooth, FM and Embedded AT allows total cost savings and fast time-to-market for customer applications;
Quad-band 850/900/1800/1900MHz
GPRS multi-slot class 12/10
GPRS mobile station class B
Compliant to GSM phase 2/2+
- Class 4 (2 W @ 850/900MHz)
- Class 1 (1 W @ 1800/1900MHz)
Bluetooth: Compliant with 3.0+EDR
FM: 76~109MHz worldwide bands with 50 KHz tuning step
Dimensions: 15.8*17.8*2.4mm
Weight: 1.35g
Control via AT commands (3GPP TS 27.007, 27.005 And SIMCOM enhanced AT Commands)
Supply voltage range 3.4 ~ 4.4V
Low power consumption
Operation temperature:-40 ~85
Specifications for GPRS Data:
GPRS class 12: Max. 85.6 kbps (downlink/uplink)
PBCCH support
Coding schemes CS 1, 2, 3, 4
PPP-stack
CSD up to 14.4 kbps
USSD
Non transparent mode
SMS via GSM/GPRS:
Point to point MO and MT
SMS cell broadcast
Text and PDU mode
Software functions:
0710 MUX protocol
Embedded TCP/UDP protocol
FTP/HTTP
MMS
E-MAIL
DTMF
Jamming Detection
Audio Record
TTS
Embedded AT (optional)
Specifications for voice:
Triode
- Half rate (HR)
- Full rate (FR)
- Enhanced Full rate (EFR)
AMR
- Half rate (HR)
- Full rate (FR)
Hands-free operation
Echo suppression
Interfaces: 88 LGA pads including:
Analog audio interface
RTC backup
Serial interface
Interface to external SIM 3V/1.8V
GSM Antenna pad
FM Antenna pad
Bluetooth Antenna pad
Compatibility: CE, GCF, FCC, ROHS, REACH