SIM800L GSM GPRS Module Expansion Board with Antenna - EXSIMPL

SIM800L is a miniature GSM module that allows making calls, sending/receiving SMS and transferring data over the GPRS network. Support for 4 frequency bands allows the module to be used on many networks. When powered, it automatically connects to the configured network. The LED mounted on the board indicates the connection status:

• Fast blinking – no network coverage
• Slow blinking – connection established with a GSM cell         

Current consumption in standby modes is low, but in GSM communication mode it can reach up to 2A! When powering from the mains, select a suitable high-current adapter. When powering from a battery, check the battery's capability to handle a load current of about 2A.

The maximum voltage of the serial communication pins UART( TX  and RX) is 2.8V! Although the module has been used successfully with 3.3V logic, its operation is not guaranteed.

The antenna can be connected in two ways:

• Solder pin – connects a "spring" type antenna (included in the kit)
• IPX connector – for a matching antenna with an IPX connector

The figure shows the board pins, which are also marked in white print on the board itself:

Additional information:

• Connection
• Arduino library
• Example code