DFRobot SIM808 GSM/GPRS/GPS IoT Board - Arduino Compatible male header Operating Frequency: 2400MHz ~ 2524MHz

Operating Frequency: 2400MHz ~ 2524MHz

Other RTC solutions may drift minutes per month

making it suitable for projects that require battery longevity

and maker boards

"how to make a bluetooth chip work" and so on

DFRobot SIM808 GSM/GPRS/GPS IoT Board - Arduino Compatible male header Operating Frequency: 2400MHz ~ 2524MHzBuild Faster with the SIM808 GSM GPRS GPS IOT Board Arduino Compatible This is an Arduino Leonardo with SIM808 GSM GPRS GPS. The SIM808 with Leonardo mainboard is the latest Arduino board developed by DFRobot for multi purpose applications. The onboard SIM808 module includes an integrated quad band GSM GPRS and GPS satellite navigation module, and a 4 layer PCB integrates the microcontroller, microphone, headphone jack and GPRS GPS, giving this board