Warm prompt: Dear buyer, Our cheapest transportation services Economic category logistics (SunYou Economic Air Mail ,China Post Ordinary Small Packet Plus ) can be traced only befor it arrive your country,please choose Standard category logistics if you want a full tracking info. Sim800L is a GSM/GPRS module. You can send a message, make a call, transfer data though the GPRS or something else. Overview This SIM800l module has a set of TTL level serial interface, a set of power supply interface. Besides, there are a set of antenna interface on this module. The chip of SIM800L basic features SIM800H is a complete Quad-band GSM/GPRS solution in a LGA type which can be embedded in the customer Applications: SIM800H 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. Featuring Bluetooth, FM and Embedded AT, it allows total cost savings and fast time-to-market for customer applications. General features 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 Specifications for SMS via GSM/GPRS Point to point MO and MT SMS cell broadcast Text and PDU mode Software features 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 AT cellular command interface Certifications (Plan): CE GCF FCC ROHS REACH The module Basic features 51 STM32 AVR MCU compatible Prototype expand The frequency is 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 2.85/3.3/5v MCU LED: Two led, the Net led and the RING led. Size:27*39mm SIMCARD: micro SIMCARD holder The description of pins: The name of pins Description 5v Power interface Power the module CONNECT TO DC5v GND VDD 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. SIM_TXD SIM_RXD GND if this pin is unused, keep open RST RST the module, if this pin is unused, keep open The name of pins Description 5v Power interface Power the module CONNECT TO DC5v GND VDD 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. SIM_TXD SIM_RXD GND if this pin is unused, keep open RST RST the module, if this pin is unused, keep open