Gsm gprs

GSM/GPRS Shield Expansion Board EFCom Wireless Module With Antenna Description: The GPRS Shield-EFCom expansion board is a serial GSM / GPRS wireless module. Arduino enthusiasts to quickly learn a GSM / GPRS mobile phone development, and can be applied to wireless development projects to the class, but also suitable for remote control development, such as wireless meter reading, smart appliances, ultra-long-range control.   EFCom compatible with all the Freaduino and standards the Arduin development board. EFCom is a 4-band GPRS / GSM module supports four standard band 850/900/1800/1900MHz, send SMS messages, phone calls, faxes, etc. all GPRS handsets have features. EFCom allows your very fast phone development process and the wireless development.   EFCom SIM900 is a patch type GSM / GPRS integrated single-chip, ARM926EJ-S core, build enthusiasts and learn to use the smallest integrated development environment.   The EFCom using AT commands through UART serial configuration settings only need to extend the board into Freaduino board, you will be able to easily control via AT commands EFCom make calls, send text messages... addition EFCom support LCD5110 display (default hair Bluetooth backlight, is inserted in EFCom effect diagram below) and serial keypad keyboard input.   The board set the hardware boot the Button Software boot (D10), hardware RestButton, software Rest (D9) allows use and arduino spiritual and match to meet various types of both hard boot or soft boot or the hard reset or soft restart DIY needs. The two jump take to D0-D3, you are excelent to choose EFCom Arduino communication: software serial port (jumper cap to D2, D3) or hardware serial port (D0, D1).   EFCom three operating modes: Short Message Service SMS service mode Audio music mode GPRS mode Features: Fully compatible the Arduino and Mega2560 development board series Serial communication, the freedom to choose hardware serial port (D0/D1) or software serial communication (D2/D3) and motherboard SIM900, all the IC set aside not only the UART, DEBUG mouth, all GPIO port and KEY PANEL interface Board super capacitor to ensure the RTC work Support both hardware and software switch machines, support for hardware and software restart 4 band 850/900/1800/1900 MHz   Specification: The GPRS Shield power supply 5V GPRS multi-slot class 10/8 GPRS mobile station class B Compliant to GSM phase 2/2 +  - Class 4 (2 W@850/900 MHz)  - Class 1 (1 W@1800/1900MHz) Weight: 3.4g Control via AT commands (GSM 07.07, 07.05 and SIMCOM enhanced AT Commands) SIM application toolkit Supply voltage range: 3.1 - 4.8V Low power consumption: 1.5mA (sleep mode) Operation temperature: -40 ° C to +85 ° C Note: Plug Freaduino / Arduino Main Board, in connection we 9V DC AC adapter. The reason is the need EFCom boot current and maximum peak current 2A, but the USB port is unable to provide such a large current, so must an external power supply equipment.Your SIM card is not lockedBest EFCom communication baud rate of 19200 bps 8-N-1(EFCom default automatic pairing baud rate) Package included: 1 x EFCom wireless module 1 x Quad-Band antenna IO definition: Dimension:   PCB:

GSM / GPRS / GPS Portable Vehicle Tracking System Global Smallest GPS Tracking Device Support 4GB Application:  1) Anti-heft of the vehicle / heavy equipment etc  2) Protection of the child / elderly / disabled / pet etc  3) Provide peace-of-mind for businessman  4) Personal management  5) Covert criminal tracking  Main Features:  1) Vehicle rental / Fleet management etc  2) Powerful magnet + water proof adsorbing in the hidden place of car.  3) Protect child / the old / the disabled / pet etc  4) Provide peace-of-mind for businessmen  5) Manage personnel  6) Track criminals secretly  Specifications:  1) Dim: 64mm x 46mm x 17mm (1.8 x 2.5 x 0.65 inch)  2) Weight: 50g  3) Network: GSM/GPRS  4) Band: 850/900/1800/1900Mhz  5) GPS chip: SIRF3 chip  6) Support 4GB micro SD card memory (not included)  7) GPS sensitivity: -159dBm  8) GPS accuracy: 5m  9) Time to first fix: Cold status 45s  10) Warm status: 35s  12) Hot status: 1s  13) Car charger: 1224V input; 5V output  14) Wall charger: 110220V input; 5V output  15) Battery: Chargeable changeable 3.7V 800mAh Li-ion battery  16) Standby: 80hours  17) Storage Temp: -40C to +85C  18) Operation Temp: -20C to +55C  19) Humidity: 5%--95% non-condensing

SIM800L Quad-band Network Mini GPRS GSM Breakout Module; Support network: Global quad-band network; EGSM900; DCS1800; GSM850; PCS1900; Recommended supply voltage: 4V

Specification: Voltage: 5V Frequency: 900 1800 MHz Stand by current: Working current: Baud: 9600 or change by sending AT+IPR=xxxx Interface: TTL Commands: Regular AT commands Connector: 5V GND TxD RxD Antenna: Please solder a copper wire to the board or use an IPEX socket Temperatures: -30 C to 80 C Functions: Send/receive SMS messages and GPRS data. Feature: Excellent for remote sensing, experiments, alarms and automatic data collection. The control port is a regular serial port. You may connect it directly with a microcontroller such as Arduino, or you can use a USB to serial port adapter and send commands directly from a computer. Note: This is a DIY kit, you need to have some knowledge of electronics and ability. Package includes: 1 x DIY Kit Complete schematic:

Product Introduction: SIM868 module is a compatible Quad-Band GSM/GPRS module which combines GNSS technology for satellite navigation. The compact design which integrated GPRS and GPRS/Glonass in a SMT package will significantly save both time and costs for customers to develop GNSS enabled applications. Featuring an industry-standard interface and GNSS function, it allows variable assets to be tracked seamlessly at any location and anytime with signal coverage. General Features: 1.Quad-band 850/900/1800/1900MHz 2.GPRS multi-slot class 12/10 3.GPRS mobile station class B 4.Compliant to GSM phase 2/2+: class 4 (2W, 850/900MHz); class 1 (1W, 1800/1900MHz) 5.Dimensions: 17.6*15.7*2.3mm 6.Control via AT commands (3GPP TS 27.007, 27.005 and SIMCom enhanced AT Commands) 7.Supply Voltage Range: 3.4-4.4V 8.Low power consumption 9.Operating Temperature: -40~85 Celsius Specifications for GPRS Data: 1.GPRS class 12: max. 85.6kbps (downlink/uplink) 2.PBCCH support 3.Coding schemes CS 1, 2, 3, 4 4.PPP-stack 5.USSD Specifications for SMS via GSM/GPRS: 1.Point to point MO and MT 2.SMS cell broadcast 3.Text and PDU mode Software features: 1.0710 MUX protocol 2.Embedded TCP/UDP protocol 3.FTP/HTTP 4.MMS 5.POP3/SMTP 6.DTMF 7.Jammping Detection 8.Audio Record 9.SSL 10.Bluetooth 3.0 (optional) Specifications for GNSS: 1.Receiver type 2.33 tracking/99 acquisition channel GNSS receiver 3.Sensitivity: tracking for -165dBm; cold starts for -148 dBm 4.Time-To-First-Fix: cold starts 28s (typ);warm starts 26s; hot starts 5.Accuracy: horizontal position Interfaces: 1.77 SMT pads including 2.Analog audio interface 3.SPI interface (optional) 4.RTC backup 5.Serial interface 6.USB interface 7.Interface to external SIM 3V/1.8V 8.GPIO 9.ADC 10.GSM Antenna pad 11.Bluetooth Antenna pad 12.GPS Antenna pad Package included: 1 x SIM868 GSM GPRS GPS Bluetooth 4 In 1 Module 1 x GSM/GPRS PCB antenna 1 x GPS IPEX interface active antenna

Product Introduction: SIM868 module is a compatible Quad-Band GSM/GPRS module which combines GNSS technology for satellite navigation. The compact design which integrated GPRS and GPRS/Glonass in a SMT package will significantly save both time and costs for customers to develop GNSS enabled applications. Featuring an industry-standard interface and GNSS function, it allows variable assets to be tracked seamlessly at any location and anytime with signal coverage. General Features: 1.Quad-band 850/900/1800/1900MHz 2.GPRS multi-slot class 12/10 3.GPRS mobile station class B 4.Compliant to GSM phase 2/2+: class 4 (2W, 850/900MHz); class 1 (1W, 1800/1900MHz) 5.Dimensions: 17.6*15.7*2.3mm 6.Control via AT commands (3GPP TS 27.007, 27.005 and SIMCom enhanced AT Commands) 7.Supply Voltage Range: 3.4-4.4V 8.Low power consumption 9.Operating Temperature: -40~85 Celsius Specifications for GPRS Data: 1.GPRS class 12: max. 85.6kbps (downlink/uplink) 2.PBCCH support 3.Coding schemes CS 1, 2, 3, 4 4.PPP-stack 5.USSD Specifications for SMS via GSM/GPRS: 1.Point to point MO and MT 2.SMS cell broadcast 3.Text and PDU mode Software features: 1.0710 MUX protocol 2.Embedded TCP/UDP protocol 3.FTP/HTTP 4.MMS 5.POP3/SMTP 6.DTMF 7.Jammping Detection 8.Audio Record 9.SSL 10.Bluetooth 3.0 (optional) Specifications for GNSS: 1.Receiver type 2.33 tracking/99 acquisition channel GNSS receiver 3.Sensitivity: tracking for -165dBm; cold starts for -148 dBm 4.Time-To-First-Fix: cold starts 28s (typ);warm starts 26s; hot starts 5.Accuracy: horizontal position Interfaces: 1.77 SMT pads including 2.Analog audio interface 3.SPI interface (optional) 4.RTC backup 5.Serial interface 6.USB interface 7.Interface to external SIM 3V/1.8V 8.GPIO 9.ADC 10.GSM Antenna pad 11.Bluetooth Antenna pad 12.GPS Antenna pad   Package included:   1 x SIM868 GSM GPRS GPS 3 In 1 Module 1 x GSM/GPRS PCB antenna 1 x GPS IPEX interface active antenna

This GPS tracked designed to work on existing GSM/GPRS network and GPS satellites, this product can locate and monitor any remote targets by SMS and GPRS. TK06A can be used to track or motor any vehicle or motorcycle within location where it can receive GPS and GSM mobile network. This GPS tracker can be used for application on business, rental, or personal vehicle as monitoring or antitheft device. TK06A was designed for compact and easy installation.  This is how it works:  GSM module orders to capture GPS data and sends to the authorized mobile number by SMS, it can show the current location on phone or tracking the location on Google earth or Google map. Moreover, GPS data can be transmitted by GPRS to Internet server so that realize real time tracking on a computer. Main functions GSM quad-band frequency for worldwide use  Continuous GPS positioning, and GPRS real-time report;  Support location enquiry through SMS  Specifications: GSM frequency ranges: 850/900/1800/1900 Network: GSM/GPRS/GPS GPS chip: UBLOX GSM module: MTK60 GPRS: Class10, TCP/IP Working voltage: 9~24V DC Working current: ≈22mA (12V DC) Working current: ≈12mA (24V DC) GPS positioning time: cold start≈38s (Open sky), warm start≈32s, hot start≈2s (Open sky) GPS positioning accuracy: 10m (2D RM) Working ambient temperature: -20°C~+70°C Working ambient humidity: 20%~80% RH Web based platform: www.gps228.com Work voltage: 9V-36V or 24V-80V Storage Temp.: -40°C to +85°C Operation Temp.: -20°C to +55°C Humidity: 5%--95% Dimensions: 90(L) × 45(W) × 14(H)mm Weight: 50g Product requirement: GSM SIM card with SMS service Package Includes: TK06A GPS/GSM Tracker Wire harness with fuse holder User manual Retail packaging      

  This GPS tracked designed to work on existing GSM/GPRS network and GPS satellites, this product can locate and monitor any remote targets by SMS and GPRS. TK06A can be used to track or motor any vehicle or motorcycle within location where it can receive GPS and GSM mobile network. This GPS tracker can be used for application on business, rental, or personal vehicle as monitoring or antitheft device. TK06A was designed for compact and easy installation.   This is how it works:   GSM module orders to capture GPS data and sends to the authorized mobile number by SMS, it can show the current location on phone or tracking the location on Google earth or Google map. Moreover, GPS data can be transmitted by GPRS to Internet server so that realize real time tracking on a computer. Main functions   GSM quad-band frequency for worldwide use Continuous GPS positioning, and GPRS real-time report; Support location enquiry through SMS Specifications:   GSM frequency ranges: 850/900/1800/1900 Network: GSM/GPRS/GPS GPS chip: UBLOX GSM module: MTK60 GPRS: Class10, TCP/IP Working voltage: 9~24V DC Working current: ≈22mA (12V DC) Working current: ≈12mA (24V DC) GPS positioning time: cold start≈38s (Open sky), warm start≈32s, hot start≈2s (Open sky) GPS positioning accuracy: 10m (2D RM) Working ambient temperature: -20°C~+70°C Working ambient humidity: 20%~80% RH Web based platform: www.gps228.com Work voltage: 9V-36V or 24V-80V Storage Temp.: -40°C to +85°C Operation Temp.: -20°C to +55°C Humidity: 5%--95% Dimensions: 90(L) × 45(W) × 14(H)mm Weight: 50g Product requirement:   GSM SIM card with SMS service Package Includes:   TK06A GPS/GSM Tracker Wire harness with fuse holder

SIM808 GSM GPRS GPS BT Development Board Module For Arduino Description: SIM808 a new generation of GSM, GPRS, GPS, bluetooth (optional) SIM808 GSM GPRS module is a four frequency for the castle hole encapsulation. Its performance is stable, compact appearance, high cost performance, which can meet the various needs of customers. SIM808: SIM808 working frequency for GSM/GPRS / 1800/1900 850/900 MHZ, can realize low-power transmission of voice, SMS and data information. Features: The four frequency MHZ 850/900/850/900 SMS FTP/HTTP, embedded TCP/UDP protocol DTMF detection, bluetooth 3.0 (optional), USB interface Arduino SIM808 shields hardware: Power interface support 5-20V voltage input, pay attention to the voltage of 5-9V, can provide not less than 2 a power adapter current. 1. Can choose to use through the jumper cap hardware serial port (D0 D1) or software serial port (D7 D8). 2. Support the MICRO SIMCARD. 3. Support four headphone jack (I type). 4. Update SIM800C firmware support via USB or serial port. 5. Can be upgraded to a bluetooth version of the development board. 6. On board TVS diode, SIM card protection IC, two 100 uf tantalum capacitors and so on a variety of ways to make the stable development board performance. 7. Support the lithium battery (3.6-4.2 V) For TTL level serial communication interface. Fully compatible with the Arduino and compatible with other 5 V, 3.3 V, 2.85 V system. Arduino SIM808 shields software: By TTL level a serial port communication with external systems, the default is communicated with 5 v system directly. Communicated 3.3 V and 2.85 V, it needs to do a bit of hardware processing. Communication interface (command) for the AT command, which is control module function to realize the AT command, such as: control module to make calls using ATD * * * * * * *; (* phone number) for each other. Package included: 1 x SIM808 GSM GPRS GPS BT Development Board Module For Arduino

Place the YGE TK102B Real Time GPS/GSM/GPRS GPS Tracker anywhere you want to keep track of the things you concern about! It features accurate and precision real time tracking within its small, compact design. And it is built with SOS function in case of emergency. There are other amazing functions that are integrated into it, including route planning, track replay and electronic fence. Moreover, it uses not only GPS but also GSM and GPRS network to ensure its stable performance. Don't hesitate to order now! Use GPS along with GSM and GPRS network Offer accurate and precision real time tracking location data Support route planning, track replay and electronic fence Built with SOS function in case of emergency Small, compact design, stable performance. Network: GSM / GPRS Band: MHz GSM Chip: MT GPS Chip: Ublox GPS Sensitivity: -159dBm GPS Accuracy: 5m Time To First Fix: Cold Status 45s Warm Status 35s Hot Status 1s Wall charger: V Input / 5V Output Battery: 3.7V mAh Li-ion Standby: 80hours Material: PC Weight:50g Color: Black Dimensions:64mm x 46mm x 17mm 1 x GPS Locator 1 x Adapter 1 x Charger 1 x Cover 1 x Batteries 1 x User Manual

Mini A8 Android Realtime GSM / GPRS Location Tracker Supports all South African 2G SIM cards (not included) Remote listening capabilities Environmental surveillance SOS Emergency Call Real Time 4 bands GSM/GPRS VOX Back Call Approx. 12 days standby time Size approx: 43.2mm x 32mm x 13.6mm Connection: GSM / GPRS GSM Frequency: 850/900/1800/1900 MHz   Charger Input: AC110-220V 50/60 Hz Charger Output: DC5V 500mA Battery: Rechargeable battery 3.7V 500mA Li-ion battery Now on sale at www.MySecretVolcanoLair.com

Mini A8 Android Realtime GSM / GPRS Location Tracker Supports all South African 2G SIM cards (not included) Remote listening capabilities Environmental surveillance SOS Emergency Call Real Time 4 bands GSM/GPRS VOX Back Call Approx. 12 days standby time Size approx: 43.2mm x 32mm x 13.6mm Connection: GSM / GPRS GSM Frequency: 850/900/1800/1900 MHz   Charger Input: AC110-220V 50/60 Hz Charger Output: DC5V 500mA Battery: Rechargeable battery 3.7V 500mA Li-ion battery Massive launch sale now on at www.MySecretVolcanoLair.com

Mini A8 Android Realtime GSM / GPRS Tracker Supports all South African 2G SIM cards (not included) Remote listening capabilities Environmental surveillance SOS Emergency Call Real Time 4 bands GSM/GPRS VOX Back Call Approx. 12 days standby time Size approx: 43.2mm x 32mm x 13.6mm Connection: GSM / GPRS GSM Frequency: 850/900/1800/1900 MHz   Charger Input: AC110-220V 50/60 Hz Charger Output: DC5V 500mA Battery: Rechargeable battery 3.7V 500mA Li-ion battery Massive launch sale now on at www.MySecretVolcanoLair.com

  T8 Mini GPS Tracker Locator Personal Google Map SOS GSM GPRS for Kids Car   Description:  T8 Mini GPS Tracker Locator is a new generation of personal GPS tracking gadget for kids-safety.It is accurate, discreet and reliable. With Quad Band GSM connectivity, the GPS Tracker works anywhere in the world. With  GSM positioning and GPS positioning, user can accurately track whether the device indoor or outdoor.You will enjoy a piece of mind with knowing exactly where your love are.   Feature: 1. GPS tracker children, seniors, pet, vehicle, luggage. 2. SOS call ,automatic dialing. 3. Intelligent fence,automatic alarm. 4. Supported two way voice communication. 5. Historical route. 6. IP54 waterproof level. 7. One mini SIM card. 8. GPS global positioning satellite + LBS base station location. 9. Support computer and iOS/Android: Android 2.3 and above, iOS 4.0 and above. pplication: 1. Vehicle rental / Fleet management etc 2. Outdoor sports 3. Protect child / the elder/ the disabled / pet etc 4. Provide peace-of-mind for businessmen 5. Personnel Management 6. Criminals Tracking   Note:   SIM card is not included in the package. Free platform for Smartphones. You do not have to go through  a third party monitoring company. The Tracker only requires a SIM card from either AT&T or T mobile,  or any other SIM card carrier.And it can only support GSM 2G SIM Card,it not support 3G, 4G SIM card.   Package Included: 1 X GPS Locator T8  1 X USB Charging cable  1 X Manual

SIM800C GSM GPRS Module STM32 Microcontroller 51 With Bluetooth High TTS Features: 1. SIM800C module 4 frequency module, available worldwide 2. This small size SIM800C can be easily embedded in your system 3. Serial TTL serial level compatible with a variety 4. The antenna comes with a high-performance springs 5. The lithium battery-powered interface, can be directly connected to 4V lithium battery 6. mainstream flip MICRO SIM card holder 7. reserved voice, Mike Pin Interface 8. Size: 24mm x 25mm Package included: 1 x SIM800C GSM GPRS Module STM32 Microcontroller 51

Description: Power supply: DC5-9V Board size: 6*4cm Support Voice, SMS, GPRS, GPS Package included: 1 x A7 GSM GPRS GPS 3 In 1 Module 1 x IPEX GPS antenna 1 x IPEX GSM antenna

 1 Summary function Working Based on existing GSM/GPRS network and GPS satellites, this product can locate and monitor any remote targets by SMS or GPRS. 1.1 Positioning and Tracking: Through the on-line Positioning Platform or the cell phone to locates at times, and get the working status. You can choose the Positioning Platform by yourself. 1.2 Triggering Emergency Alarm: When there is a emergency happened on the vehicle, you can put on the button and the installed unit will send out alarm to the authorized numbers. 1.3 Remote controlling oil and circuit: you can control the oil and circuit via the unit by SMS in anywhere and anytime. 1.4 Remote Monitoring: In anywhere and anytime, call the phone number in the unit, when it connects, you can monitor the sound around 5 meter. 1.5 Movement Alert: Send SMS to the unit to start the movement alert function. When the vehicle is moving, the unit will send the movement alert to all authorized numbers. 1.6 Overspeed Alert: Send SMS to the unit to start the movement alert function. When the vehicle is overspeed, the unit will send the overspeed alert to all authorized numbers. 1.7 Geo-fence: Set up a geo-fence for the unit to restrict its movements within a district. The unit will send the message to all authorized numbers when it breaches the district. 1.8 the unit: send SMS to resume the default of unit. 1.9 Auto Track: You can set up auto track by SMS or on-line positioning platform. 1.10 Mileage statistics; ACC checking; cutting off power and alarm. 1.11 Compatible with the original anti-theft alarm: It will send SMS alarm after the original anti-theft alarm warning. 1.12 Modify the IP and Port of Communication Protocol for different on-line positioning platform 2 Application l Vehicle rental / Fleet management etc l Protect wealth etc l Provide peace-of-mind for businessmen l Manage personnel 

Specification Network GPS , GSM , GPRS Band 850MHz , 900MHz , 1800MHz , 1900MHz SIM Card Qty. one SIM Tracking Information Method GPRS Supported Languages English Dimensions & Weight

SIM5320E 3G Module GSM GPRS SMS Development Board With GPS PCB Antenna For Arduino Program provided: 1 Send a Chinese message 2 Send a English message 3 Make a phone call, hang up automatically after 1 minute 4 Specifies the content of the message received, control the LED OFF 5 Detection the module is registered to a network, whether to read SIM card, and send message 6 Through GPRS, connect to the specified server and send the specified data 7 Provide information of dormant power consumption at about 10 ma. Feature: Power Supply: DC 5V 1A or 1A above. Communication interface: A set of TTL level serial port, compatible with 5V, 3.3V microcontroller; A set of USB interface for direct connection to the computer debugging. GPS antenna interface: A set IPXmini antenna interface, the connection active GPS antenna. GMS antenna interface: A set IPXmini antenna interface, default PCB antenna. SIM card interface: Drawer SIM card interface. USB Interface: mini USB interface. Mic voice interface: For leads, the interface is a 2.54 * 4P single row of needle. Other interfaces: A set IIC interface, a set for controling the module opening and closing interface (the default automatic start). Indicator: A 0603 LED, for indicating the operating state of the module, a 0603 LED, for network status indication for the module. SIM5320E chip: Package includes: 1 x SIM5320E 3G Module 1 x 3G PCB antenna 1 x GPS antenna 1 x IPX-SMA cable

Feautures   -Real time tracking by SMS/GPS -Real time voice monitoring --It can cut vehicle oil -SOS Alarm   Package Include -1x GT06 GPS GSM GPRS Vehicle tracker 1x Power wire 1x SOS wire 1x Siren Wire 1x Microphone 1x Relay  

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  Features: SMS and GPRS two modes can be switched 6600mAH battery, long stand by  time Strong magnetic SOS alarm Geo - fence Movement/over speed/low battery alarm Real-time tracking Add power saving mode WATERPROOF and dust proof Free Web server, mobile APP (for Android and iOS)   Package Include: 1 x Original retail box 1 x GPS Tracker   TK800 1 x Charging cable 1 x Plug 1 x User Manual

Specification: Arduino 51 STM32 AVR MCU compatible Prototype expand The frequency is 850/900/1800/1900 MHz Power supply range: voltage is 5-12V; current is 1A or more (the current is very important). Operating temperature range: -40 °C to +85 °C Communication interface: The TTL level serial interface compatible 2.85/3.3/5V LED: Two led, the Net led and the RING led. Size: 48*50mm SIMCARD: micro SIMCARD holder Feature: TTL level serial port compatible with 3.3V and 5V microcontrollers. The initial use of computer debugging, it is recommended to use CP2102 USB-TTL module to power supply and communication; Using the MCU control module, you can also using the USB - 232 monitoring return data on the instructions, great convenience to find the problem, especially suitable for 51 MCU. Standby in 30MA or so, you can set the sleep state of about 10MA low power consumption. Support SMS, GPRS data transmission, send MMS, DTMF, HTTP, FTP, PPP dial-up and other functions. The hardware contains one channel reset pin. This reset pin can be used to resolve a problem with the module. Development board supports 2G / 3G / 4G Unicom or mobile phone card. Package includes: 1 x SIM800A Module Wireless Development Board 1 x Antenna Reference picture, test tools does not includes!