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GSM Module
GSM Module
GSM Module
GSM Module
GSM Module
GSM Module
GSM Module
GSM Module
GSM Module
GSM Module

EMC-00006-B

(Last updated) Jun 20, 2026

GSM Module

GSM communication module

The SIM900A GSM Module is a wireless communication module used for SMS, voice, and data applications over GSM networks. It supports UART communication and SIM card integration for microcontrollers like Arduino. It is widely used in IoT systems, remote monitoring, automation, and embedded communication projects.
Frequency bands Dual-band
GPRS connectivity GPRS multi-slot class 10 (default) , GPRS multi-slot class 8 (option)
Operating Temperature Range -30 to 80 ºC
Supply Voltage 3.4 – 4.5 V
Dimensions (LxWxH) 8.5×5.7x2cm (approx)