SIM808 Module GSM GPRS GPS Development Board + IPX SMA GSM GPS Antenna Support 2G Network for Arduin

Product Description

Description:
1.Three power input interface: DC044 interface and V_IN and a lithium battery interface.
Note: The range of DC044 and V_IN pin voltage input is 5-26V, when use 5V as the power, be sure that power supply can provide 2A current. The range of voltage of Lithium battery input power is 3.5-4.2V.

2. Start button: When the board is power on, the LED (PWR) will light up. After a long press (about 2 second) on this button, other three LEDs will light. And one of them starts to flash; this suggests SIM808 is beginning to work. When the power supply, GSM and GPS antenna and SIM card are connected to the module correctly, the LED will be flash slowly (3Second de 1second light), that indicates the module is registered to the network, and you can make a call or do something else.

3. TTL serial interface: a TTL level interface. Notice: The pin of VMCU is used to control high level of TTL UART, so as to realize to match between 1.25V/3.3V /5V systems. For example, if you want to use the 51 MCU to control this board, the pin of VMCU should be connected the DC5V. And if use STM32 MCU, the pin of VMCU should be connected the DC3.3V. The pins of RXD is the RXD of SIM808 and the pins of TXD is the TXD of SIM808. The pin of V_IN can connect the Power, the function of this pin is the same as DC044.

Operation:
1. Preparation:
SIM808 SHIELD
DC9V adapter
USB-TTL module or other tools.
PC software
2. Hardware configurations
2.1 Connect USB-TTL to UART interface
USB-TTL SIM808
TXD RXD
RXD TXD
GND GND

2.2 Insert valid SIM card to SIMCARD holder.
2.3 Connect the GPS antenna and GSM antenna to the board
Connect the power adapter to the DC044 Interface
2.4 Change the switch
2.6 Press the POWKEY button for 2 second, the module will work and the other 3 LEDs will light

Features

• Document link，https://tinyurl.com/yykfnn7c ,This SIM808 module only works with 2G Network It can send SMS message. If your place is 3G Network, pls buy sim5320a Module. If you need 4G module, pls search SIM7100A in my store.
• It is used to open / close the input power supply for the module. When in use, please confirm the toggle switched to the OPEN state (near the board inside)
• SMA antenna interface: there is a GSM antenna interface, a GPS antenna interface onboard and a BT antenna interface
• USB interface: This interface is just use to update the firmware of SIM808 module
• If you have any issue when using our product,or you need product use documentation， please contact us directly for assistance.we will reply your problem in 24 hours.We try our best to provide the most professional service for each customer.

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