SIM800L Mini GPRS GSM Module

The SIM800L is a cheap and portable GSM breakout board with all the capabilities of the larger SIM900 shields. In this Arduino SIM800L tutorial, I will help you get started with this nifty device. Sending and receiving texts with your Arduino have never been easier!

Smallest SIM800L GPRS GSM Module MicroSIM Card Core BOard Quad-band TTL Serial Port.

Specifications:

• Chip: SIM800L
• Voltage: 3.7-4.2V
• Support networks: China Mobile, China Unicom and global quad-band network
• Module size: 2.5cmx2.3cm
• TTL serial port for serial port, you can link directly to the microcontroller. No need MAX232
• Power module automatically boot, homing network
• Onboard signal lights all the way . It flashes slowly when there is a signal, it flashes quickly when there is no signal

Package Included:

• 1 x SIM800L Quad-band GPRS GSM Module

This SIM800L breakout board is ideal for projects that needs to save space. In fact, this is the one I used when I created my own cellphone. This board draws a maximum of 2 A with an input voltage of 3.7 V to 4.2 V. This means you must not connect its pins directly to a 5 V Arduino! It doesn’t even run on 3.3 V.

The solution is either to use a regulator or just have the SIM800L draw from a Li-Po (cellphone) battery. That’s what I did and it works!