quick setup guide

  • Please use a USB-serial adapter like CP2102 or FT232RL, connect 5V, GND, VTXD and VRXD.
  • Must well attached the SIM card and 2.4Ghz antenna.
  • Hold down the side button for 3-5 seconds until LED start to blink,.
  • Now you can send AT commands via serial uart COM port.
  • (USB port is NOT working for debugging, please do not connect to use it.)

Application Note

Power supply

  • VBAT Module power voltage min. 2.1 typ. 3.3 max. 3.6 V

PSM Mode

  • AT commands to enter into PSM power save mode
  • pull down RTC_EINT or PWR_KEY to quit PSM mode



module versions

module version: - SIM7020E tested working countries: Finland, Sweden

Supported band

  • SIM7020E: B1 B3 B5 B8 B20 B28
  • SIM7020G: all bands, please see our wiki page NBIOT.


other ref

  • NBIOT - https://w.electrodragon.com/w/Category:NBIOT
  • legacy wiki - https://w.electrodragon.com/w/Category:SIM7020

  • SIM7020 git info : https://github.com/Edragon/SIMCOM_SIM7020


  • Basic Test Demo - https://www.youtube.com/shorts/HXGcgzOb-aY

board ref