CentIoT- Small SIM800L GPRS GSM Module MicroSIM Card Core Board Quad-BandTTL Serial Port with antena at Rs 269/piece | GSM GPRS Module | ID: 20881945012
GPS and Vehicle Motion Tracker IoT Smart Logger for TTGO T-call (SIM800L, UBlox NEO-7M, ESP32) : 8 Steps - Instructables