SIM808 module is a complete Quad-Band GSM/GPRS module which combines GPS technology for satellite navigation. The compact design which integrated GPRS and GPS in a SMT package will significantly save both time and costs for customers to develop GPS enabled applications. Featuring an industry-standard interface and GPS function, it allows variable assets to be tracked seamlessly at any location and anytime with signal coverage.

Quick Specs

• Board Product Code: BK-SIM808
• Quad-band 850/900/1800/1900MHz
• GPRS multi-slot class 12/10
• GPRS mobile station class B
• Bluetooth: compliant with 3.0+EDR
• Board Size 37 * 27 mm
• Analog audio interface
• RTC backup
• 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℃
• GSM Antenna pad
• Jamming Detection

Board Layout

Board Layout & Pin Functions

PWRIN range is from 5.0V to 10V, 5.0V is recommended, TXD and RXD are TTL level which can be directly connected with MCU.

Testing the Sim808 Module

• Install GSM, GPS and Bluetooth antenna
• Install SIM card
• Feed power supply to PWRIN pin, LED indicator D102 will come ON
• Note: PWRIN range is from 5.0V to 10V. 5.0V is recommended
• If LED D100 Blink quickly, which shows un-registration network
• If LED D100 Blink slowly shows registration successful
• Default Baud Rate : 9600

Resources

• SIM808 Chip Product Page
• SIM808 Chip Download Page
• SIM800 Series AT Command Ref
• BK-SIM808 Manual 
• Programming
• Hardware and Design