GSM Module SIM800L

Specification

• Supply voltage: 3.8V – 4.2V
• Recommended supply voltage: 4.1V  ( YOU CAN USE STEP DOWN MODULE TO GET THIS VOLT)
• Power consumption:
  • sleep mode < 2.0mA
  • idle mode < 7.0mA
  • GSM transmission (avg): 350 mA
  • GSM transmission (peek): 2000mA
• Module size: 25 x 23cm
• Interface: UART (max. 2.8V) and AT commands
• SIM card socket: microSIM (bottom side)
• Supported frequencies: Quad Band (850 / 950 / 1800 /1900 MHz)
• Antenna connector: IPX
• Status signaling: LED
• Working temperature range: -40 do + 85 ° C

you can use step-down module lm2596 with it and adjust the potentiometer to get 4.1volt