SIM808 Module GSM GPRS Features:
- Power Input Options:
- DC044 Interface & V_IN Pin: Voltage input ranges from 5V to 26V. Ensure a 2A current when using a 5V power source.
- Lithium Battery Interface: Accepts a voltage of 3.5V to 4.2V.
- Operational Switch: To activate the module, switch to the OPEN state (closer to the board’s interior side).
- Antenna Interfaces: Equipped with GSM, GPS, and BT antenna connectors, ensuring wide coverage and signal strength.
- Startup Mechanics: Once powered, the PWR LED lights up. A long press (~2 sec) on the start button initiates the SIM808’s operations. Successful module registration is indicated by the LED flashing pattern.
- TTL Serial Interface: Offers a TTL level interface. The VMCU pin dictates the TTL UART’s high level, catering to 1.25V, 3.3V, or 5V systems. Ensure correct VMCU connection based on your MCU type.
- USB Interface: Exclusively for SIM808 firmware updates.
Operational Guide of SIM808 Module:
- Essentials:
- SIM808 SHIELD
- DC9V Adapter
- USB-TTL Module or equivalent
- PC Software
- Setting It Up:
- Link USB-TTL to the UART Interface:
- TXD (USB-TTL) → RXD (SIM808)
- RXD (USB-TTL) → TXD (SIM808)
- GND (USB-TTL) → GND (SIM808)
- Insert a valid SIM card.
- Attach the GPS and GSM antennas.
- Connect a power adapter to the DC044 interface.
- Adjust the operational switch.
- Activate the module with a 2-second press on the POWKEY.
- Link USB-TTL to the UART Interface:
In the Box:
- 1 X SIM808 Module
- 1 X GSM Antenna
- 1 X GPS Antenna
Step into the world of enhanced global positioning and communication with Kunkune’s SIM808 board. It’s more than a module – it’s your next step in tech evolution.