GSM Module/4G LTE modem with SIM card socket, SMA antenna connector, DC power Pin, and Rx Tx interface supports wireless communication modes of LTE-TDD/LTE-FDD/GSM/GPRS/EDGE.
 
Suitable for LTE and GSM networks. This board is built around the SIMCOM A7670C LTE module and comes with Rx Tx TTL interface. 
A pin header also exposes a 1.8V level UART interface for direct interfacing with microcontrollers. Communication with A7670C is done using AT commands.
 
Technical Specifications: GSM Module – 4G LTE modem
Suitable for LTE and GSM networks.
DC  input voltage: 5V
frequency bands supports LTE-FDD, LTE-TDD, and GSM.
Control via AT commands.
In-built SIM Card Holder.
Power LED and Network Status LED.
Powerful TCP/IP protocol stack for internet data transfer.
Supports maximum 10Mbps downlink rate and 5Mbps uplink rate.
SMA connector for external antenna.
1.8V UART header.
Recommended Sim card: JIO 4G Sim