This is SIM808 Module GSM GPRS GPS Development Board with GPS Antenna for Support 2G 3G 4G SIM Card. The SIM808 module is a versatile integrated module that combines GSM, GPRS, and GPS functionalities into a single board. Here are its key characteristics:

1. GSM: Provides basic cellular communication functionalities, allowing the module to make and receive calls, send and receive SMS messages, and connect to the internet using GPRS for data transmission.
2. GPRS: Enables the module to access the internet and send/receive data packets. Its commonly used for IoT (Internet of Things) applications where low-bandwidth data transfer is sufficient.
3. GPS: Incorporates a GPS receiver, allowing the module to receive location information from satellites, providing accurate positioning data.
4. Integrated Development Board: Often comes as a development board that simplifies the integration of the SIM808 module into various projects. It typically includes necessary components, like power supply, connectors, and sometimes additional features for ease of use in prototyping.
5. Serial Communication: Communicates with microcontrollers or computers using serial communication protocols (like UART), making it relatively easy to interface with various devices.
6. Compact Size: Despite its multiple functionalities, it usually maintains a relatively small form factor, making it suitable for various portable or embedded applications.
7. Applications: Widely used in tracking systems, vehicle monitoring, asset tracking, location-based services, and other projects that require cellular communication and GPS functionalities combined.
8. External Antenna: Requires an external antenna for GSM, GPRS, and GPS functionalities to ensure proper signal reception and transmission.

When working with the SIM808 module, its essential to refer to the modules datasheet and documentation provided by the manufacturer for detailed technical specifications, pinout information, communication protocols, and integration guidelines to effectively utilize its functionalities in your specific project or application.

Note: Antenna design may vary. Refer to datasheet & antenna manual in the ATTACHMENTS section for more info. regd. the product.

Features:

1. Easy to use
2. The Module is supplied by 5 26V power, when the power supply less than 9V, to be sure need provide 2A current. The other power supply port is 3.5-4.2v, which is suitable for lithium batteries.
3. Computer debugging USB- TTL can be. Portable to use. Two antenna SMA ports, comes with GPS and GSM antenna; Two IPX ports for easy insertion in the aluminum box and extract antenna.
4. 1 TTL serial port, GPS and GSM functions can be switched freely; Can achieve GPS positioning, SMS, data and other functions.
5. Standby around 80mA, power consumption around 10mA. With voice and microphone interface. It belongs to 4 frequency and is available globally.

Specifications:

1. Power supply: 3.4V ~ 4.4V
2. GPS Antenna freq: 1575.42 MHz (2.7~5V)
3. GPS Antenna cable length: 3M
4. Power saving: Typical power consumption in sleep mode is 1mA ( BS-PA-MFRMS=9, GPS engine is powered down )
5. Charging: Supports charging control for Li-Ion battery
6. Frequency bands: SIM808 Quad-band: GSM 850, EGSM 900, DCS 1800, PCS 1900. SIM808 can search the 4 frequency bands automatically. The frequency bands also can be set by AT command AT+CBAND
7. Normal operation: -40 ~ +85
8. Storage temperature -45~ +90
9. Product dimensions (mm): 76 x 50 x 9
10. Product weight (g): 35

Package Includes: