ES-GSM-EC200-U is a ready to use breakout module can be plugged in your GSM based or IOT based products. 
               

Features               

● Compact size to plug in your application PCB
● UART output with both 5V and 3.3v MCU interface
● 3 LED Indicators (Red - Power ON, Yellow - Network Status, Green - 4G)
● Power supply is +5v 
● Pinout for (GND, VCC, TXD, RXD & part from this basic 4 pins also we have for PWRKEY, RESET, POWER ENABLE)

      > GND, VCC = Power Supply maximum +5v only

      > TXD, RXD = UART Data Pins

      > PWRKEY  = to power on GSM chip (optional, leave free if not used, by default automatic power on mode)

      > RESET     = to reset the GSM chip (optional, leave free if not used)

      > PEN        = used to shut down the power supply for the GSM chip or complete circuit, used for power saving (optional, leave free if not used)